The Meaning of 1 John 1:9 Explained

1 John 1:9

KJV: If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

YLT: if we may confess our sins, stedfast He is and righteous that He may forgive us the sins, and may cleanse us from every unrighteousness;

Darby: If we confess our sins, he is faithful and righteous to forgive us our sins, and cleanse us from all unrighteousness.

ASV: If we confess our sins, he is faithful and righteous to forgive us our sins, and to cleanse us from all unrighteousness.

KJV Reverse Interlinear

If  we confess  our  sins,  he is  faithful  and  just  to  forgive  us  [our] sins,  and  to cleanse  us  from  all  unrighteousness. 

What does 1 John 1:9 Mean?

Verse Meaning

This verse is the converse of 1 John 1:8. Acknowledging the sins of which we are aware is opposite to saying we are not guilty for sinning. The Greek word translated "confess" (homologeo) literally means to say the same thing. Confessing therefore means saying about our sins what God says about them, namely, that they are indeed sins, offenses against Him, and not just mistakes, blunders, or errors. One scholar wrote that this is public confession. [1] But there does not seem to be good reason to read that into the text.
""He who confesses and condemns his sins," says Augustine, "already acts with God. God condemns thy sins: if thou also dost condemn them, thou art linked on to God."" [2]
If we confess our sins, God will then forgive the sins we confess and will, in addition, cleanse us from all unrighteousness. Consequently we do not need to worry that He has failed to forgive us for sins of which we are unaware! Sin incurs a debt to God, but forgiveness (Gr. aphiemi) cancels the debt and dismisses the charge. Sin also pollutes the sinner, but God"s cleansing (katharizo) removes the stain so we can be holy again. God absolutely promises forgiveness that is consistent with His justice (because Jesus Christ paid the penalty for all our sins).
Some expositors teach that this verse cannot apply to Christians since God has already forgiven Christians and therefore we do not need to ask for what we already have. [3] This viewpoint fails to distinguish between forensic forgiveness that we receive at conversion and family forgiveness that we need after conversion. For example, a judge could pay his own son"s fine in court but then discipline him when he got home. Jesus instructed His believing disciples to ask the Father for forgiveness ( Matthew 6:12; Luke 11:4). The fact that God has removed the penalty for our sins at conversion ( 1 Corinthians 6:11; Ephesians 1:7; Ephesians 4:32; Colossians 2:13) does not remove the necessity of confessing our sins frequently. Again, the issue is not acceptance by God but fellowship with God. Conversion (forensic, positional) forgiveness makes us acceptable as members of God"s family. Continual (family, practical) forgiveness enables us to experience intimate fellowship as sons within God"s family.
"Sin interrupts fellowship but cannot change relationship." [4]
"The status just described is analogous to God"s full acceptance of Israel, as expressed in Balaam"s inspired utterance: "He has not observed iniquity in Jacob, nor has He seen wickedness in Israel" ( Numbers 23:21). Yet, on a practical level, Israel was full of failures!" [5]
"Confession of sin to God and to one another ( James 5:16) is urged throughout the N.T. from John the Baptist ( Mark 1:5) on." [6]

Context Summary

1 John 1:1-10 - Fellowship In The Light
As the aged Apostle began to write he was living over again his first happy experiences with the Savior. He heard the voice, saw the person, touched the very body in which Deity tabernacled. It was too great a bliss to be enjoyed alone, and John tells us that we may enter into the same close partnership with the Father and the Son. But no impurity or insincerity is permissible to those who enter that fellowship. Our one aim should be to maintain such a walk with God that the union with God may be unimpaired. If there are still sins of ignorance, the blood of Jesus will continue to remove them. Sin differs from sins, as the root from the fruit. God does not only forgive, He cleanses. He is faithful to His promises and just to His Son. Notice the ifs of these verses and in 1 John 2:1; they are a compendium of the blessed life. [source]

Chapter Summary: 1 John 1

1  He describes the person of Christ, in whom we have eternal life, by a communion with God;
5  to which we must adjoin by walking in the light

Greek Commentary for 1 John 1:9

If we confess [εαν ομολογωμεν]
Third-class condition again with εαν — ean and present active subjunctive of ομολογεω — homologeō “if we keep on confessing.” Confession of sin to God and to one another (James 5:16) is urged throughout the N.T. from John the Baptist (Mark 1:5) on. [source]
Faithful [πιστος]
Jesus made confession of sin necessary to forgiveness. It is God‘s promise and he is “righteous” Sub-final clause with ινα — hina and second aorist active subjunctive of απιημι — aphiēmi to cleanse (και αγιασηι — kai hagiasēi). So again with ινα — hina and the first aorist active subjunctive of καταριζω — katharizō (1 John 1:7). [source]
To forgive [ινα απηι]
Sub-final clause with ινα — hina and second aorist active subjunctive of απιημι — aphiēmi to cleanse So again with ινα — hina and the first aorist active subjunctive of καταριζω — katharizō (1 John 1:7). [source]
Confess [ὁμολογῶμεν]
From ὁμός , one and the same, and λέγω , to say. Hence, primarily, to say the same thing as another, and, therefore, to admit the truth of an accusation. Compare Psalm 51:4. The exact phrase, ὁμολογεῖν τὰς ἁμαρτίας confessthe sins, does not occur elsewhere in the New Testament. Compare ἐξομολογεῖσθαι ἁμαρτίας ( παραπτώματα ) Matthew 3:6; Mark 1:5; James 5:16. See on Matthew 3:6; see on Matthew 11:25; see on Luke 22:6; see on Acts 19:18; see on James 5:16. [source]
Sins []
Note the plural, as compared with the singular, sin, in the previous verse. See note. The plural indicates that the confession is to be specific as well as general. Augustine's words are exactly to the point, but his play upon pardon and confess cannot be reproduced in English. “Vis ut ille ignoscat? Tu agnosce.” Do you wish Him to forgive? Do you confess. [source]
Faithful [πιστός]
True to His own nature and promises; keeping faith with Himself and with man. The word is applied to God as fulfilling His own promises (Hebrews 10:23; Hebrews 11:11); as fulfilling the purpose for which He has called men (1 Thessalonians 5:24; 1 Corinthians 1:9); as responding with guardianship to the trust reposed in Him by men (1 Corinthians 10:13; 1 Peter 4:19). “He abideth faithful. He cannot deny Himself” (2 Timothy 2:13). The same term is applied to Christ (2 Thessalonians 3:3; Hebrews 3:2; Hebrews 2:17). God's faithfulness is here spoken of not only as essential to His own being, but as faithfulness toward us; “fidelity to that nature of truth and light, related to His own essence, which rules in us as far as we confess our sins” (Ebrard). The essence of the message of life is fellowship with God and with His children (1 John 1:3). God is light (1 John 1:5). Walking in the light we have fellowship, and the blood of Jesus is constantly applied to cleanse us from sin, which is darkness and which interrupts fellowship. If we walk in darkness we do not the truth. If we deny our sin the truth is not in us. If we confess our sins, “God, by whom we were called unto the fellowship of His Son Jesus Christ our Lord, is faithful ” (1 Corinthians 1:9) to forgive our sins, to cleanse us from all unrighteousness, and thus to restore and maintain the interrupted fellowship. [source]
Just [δίκαιος]
Rev., righteous. From δίκη rightThe term is applied both to God and to Christ. See Revelation 16:5; John 17:25; 1 John 2:1; 1 John 3:7; 1 Peter 3:18. The two words, faithful and righteous, imply each other. They unite in a true conception of God's character. God, who is absolute rightness, must be faithful to His own nature, and His righteous dealing with men who partake of that nature and walk in fellowship with Him, is simply fidelity to Himself. “Righteousness is truth passing into action” (Westcott). [source]
To forgive [ἵνα ἀφῇ]
See John 20:23; 1 John 2:12. Primarily the word means to send away, dismiss; hence of sins, to remit, as a debt. Cleansing (1 John 1:7) contemplates the personal character of the sinner; remission, his acts. See on Matthew 6:12; see on James 5:15. To forgive is, literally, that he may forgive. On John's use of ἵνα inorder that, see on John 15:13; see on John 14:31. Forgiveness answers to the essential purpose of His faithful and righteous being. [source]
Our sins [τὰς ἁμαρτίας]
Sin is defined by John as ἀνομία, lawlessnessCompare Romans 6:19. A.V., transgression of the law (1 John 3:4). It may be regarded either as condition or as act; either with reference to the normal, divine ideal of manhood, or to an external law imposed upon man by God. Any departure from the normal ideal of man as created in God's image puts man out of true relation and harmony with his true self, and therefore with God and with his fellowman. He thus comes into false, abnormal relation with right, love, truth, and light. He walks in darkness and forfeits fellowship with God. Lawlessness is darkness, lovelessness, selfishness. This false principle takes shape in act. He doeth ( ποιεῖ ) or committeth sin. He doeth lawlessness ( τὴν ἀνομίαν ποιεῖ ; 1 John 3:4, 1 John 3:8). He transgresses the words ( ῥήματα , John 17:8) of God, and His commandments ( ἐντολαί , 1 John 2:3) as included and expressed in His one word or message ( λόγος , 1 John 2:7, 1 John 2:14). Similarly the verb ἁμαρτάνειν , to sin, may signify either to be sinful (1 John 3:6), or to commit sin (1 John 1:10). Sin, regarded both as principle and act, is designated by John by the term ἁμαρτία . The principle expressed in the specific acts is ἡ ἁμαρτία (John 1:29), which occurs in this sense in Paul, but not in the Synoptists, nor in Acts. Many of the terms used for sin by other New Testament writers are wanting in John; as ἀσέβεια ungodliness(see on Judges 1:14); ἀσεβεῖν tobe ungodly (2 Peter 2:6); παραβαίνειν totransgress; παράβασις transgression παραβάτης transgressor(see on Matthew 6:14; see on James 2:11); παρανομεῖν toact contrary to the law; παρανομία breachof law (see on Acts 23:3; see on 2 Peter 2:16); παράπτωμα trespass(see on Matthew 6:14). [source]
To cleanse []
See on 1 John 1:7. [source]
Unrighteousness [ἀδικίας]
With reference to δίκαιος righteousThe righteous One who calls us into fellowship with Himself, purges away the unrighteousness which is contrary to His nature, and which renders fellowship impossible. The word occurs in John's writings only at John 7:18; 1 John 5:17. [source]

Reverse Greek Commentary Search for 1 John 1:9

Matthew 1:22 That it may be fulfilled [ινα πληρωτηι]
Alford says that “it is impossible to interpret ινα — hina in any other sense than in order that.” That was the old notion, but modern grammarians recognize the non-final use of this particle in the Koiné and even the consecutive like the Latin ut. Some even argue for a causal use. If the context called for result, one need not hesitate to say so as in Mark 11:28; John 9:36; 1 John 1:9; Revelation 9:20; Revelation 13:13. See discussion in my Grammar of the Greek New Testament in the Light of Historical Research, pp. 997-9. All the same it is purpose here, God‘s purpose, Matthew reports the angel as saying, spoken “by (υπο — hupo immediate agent) the Lord through (δια — dia intermediate agent) the prophet.” [source]
John 1:5 In the darkness [ἐν τῇ σκοτίᾳ]
Σκοτία , darkness, is a word peculiar to later Greek, and used in the New Testament almost exclusively by John. It occurs once in Matthew 10:27, and once in Luke 12:3. The more common New Testament word is σκότος , from the same root, which appears in σκιά , shadow, and σκηνή , tent. Another word for darkness, ζόφος , occurs only in Peter and Jude (2 Peter 2:4, 2 Peter 2:17; Judges 1:6, Judges 1:13). See on 2 Peter 2:4. The two words are combined in the phrase blackness of darkness (2 Peter 2:17; Judges 1:13). In classical Greek σκότος , as distinguished from ζόφος , is the stronger term, denoting the condition of darkness as opposed to light in nature. Hence of death, of the condition before birth; of night. Ζόφος , which is mainly a poetical term, signifies gloom, half-darkness, nebulousness. Here the stronger word is used. The darkness of sin is deep. The moral condition which opposes itself to divine light is utterly dark. The very light that is in it is darkness. Its condition is the opposite of that happy state of humanity indicated in John 1:4, when the life was the light of men; it is a condition in which mankind has become the prey of falsehood, folly and sin. Compare 1 John 1:9-10. Romans 1:21, Romans 1:22. [source]
Romans 4:7 Are forgiven [ἀφέθησαν]
Lit., were forgiven. See on Matthew 6:12; see on James 5:15; see on 1 John 1:9. Also see on remission, Luke 3:3. [source]
Romans 3:3 Faith of God []
Better, as Rev., faithfulness; the good faith of God; His fidelity to His promises. For this sense see on Matthew 23:23. Compare Titus 2:10, and see on faithful, 1 John 1:9; see on Revelation 1:5; see on Revelation 3:14. Compare 1 Corinthians 1:9; 1 Corinthians 10:13; 2 Corinthians 1:18. [source]
Romans 1:17 For therein is the righteousness of God revealed [δικαιοσύνη γὰρ Θεοῦ ἐν ἀυτῷ ἀποκαλύπτεται]
Rev., more correctly, therein is revealed a righteousness of God. The absence of the article denotes that a peculiar kind of righteousness is meant. This statement contains the subject of the epistle: Righteousness is by faith. The subject is not stated formally nor independently, but as a proof that the Gospel is a power, etc. This word δικαιοσύνη righteousnessand its kindred words δίκαιος righteousand δικαιόω tomake righteous, play so important a part in this epistle that it is desirable to fix their meaning as accurately as possible. -DIVIDER-
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Classical Usage. In the Greek classics there appears an eternal, divine, unwritten principle of right, dwelling in the human consciousness, shaping both the physical and the moral ordering of the world, and personified as Themis ( Θέμις ). This word is used as a common noun in the phrase θέμις ἐστὶ itis right (fundamentally and eternally), like the Latin fas est. Thus Homer, of Penelope mourning for Ulysses, θέμις ἐστὶ γυναικός itis the sacred obligation of the wife (founded in her natural relation to her husband, ordained of heaven) to mourn (“Odyssey,” 14,130). So Antigone appeals to the unwritten law against the barbarity of refusing burial to her brother.“Nor did I deem thy edicts strong enough,That thou, a mortal man, shouldst overpass The unwritten laws of God that know not change.”Sophocles, “Antigone,” 453-455.See, also, “Odyssey,” 14,91; Aristophanes, “Clouds,” 140; “Antigone,” 880. This divine ordering requires that men should be shown or pointed to that which is according to it - a definite circle of duties and obligations which constitute right ( δίκη ). Thus what is δίκαιος righteousis properly the expression of the eternal Themis. While δίκη and θέμις are not to be distinguished as human and divine, δίκη has a more distinctively human, personal character, and comes into sharper definition. It introduces the distinction between absolute right and power. It imposes the recognition of a moral principle over against an absolutely constraining natural force. The conception of δίκη is strongly moral. Δίκαιος is right; δικαιοσύνη is rightness as characterizing the entire being of man. -DIVIDER-
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There is a religious background to the pagan conception. In the Homeric poems morality stands in a relation, loose and undeveloped indeed, but none the less real, to religion. This appears in the use of the oath in compacts; in the fear of the wrath of heaven for omission of sacrifices; in regarding refusal of hospitality as an offense against Zeus, the patron of strangers and suppliants. Certain tribes which are fierce and uncivilized are nevertheless described as δίκαιοι righteous“The characteristic stand-point of the Homeric ethics is that the spheres of law, of morals, and of religion are by no means separate, but lie side by side in undeveloped unity.” (Nagelsbach). -DIVIDER-
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In later Greek literature this conception advances, in some instances, far toward the christian ideal; as in the fourth book of Plato's “Laws,” where he asserts that God holds in His hand the beginning, middle, and end of all things; that justice always follows Him, and punishes those who fall short of His laws. Those who would be dear to God must be like Him. Without holiness no man is accepted of God. -DIVIDER-
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Nevertheless, however clearly the religious background and sanction of morality may be recognized, it is apparent that the basis of right is found, very largely, in established social usage. The word ethics points first to what is established by custom. While with Mr. Grote we must admit the peculiar emphasis on the individual in the Homeric poems, we cannot help observing a certain influence of social sentiment on morals. While there are cases like the suitors, Paris and Helen, where public opinion imposes no moral check, there are others where the force of public opinion is clearly visible, such as Penelope and Nausicaa. The Homeric view of homicide reveals no relation between moral sentiment and divine enactment. Murder is a breach of social law, a private and civil wrong, entailing no loss of character. Its penalty is a satisfaction to the feelings of friends, or a compensation for lost services. -DIVIDER-
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Later, we find this social aspect of morality even more strongly emphasized. “The city becomes the central and paramount source of obligation. The great, impersonal authority called 'the Laws' stands out separately, both as guide and sanction, distinct from religious duty or private sympathy” (Grote). Socrates is charged with impiety because he does not believe in the gods of the state, and Socrates himself agrees that that man does right who obeys what the citizens have agreed should be done, and who refrains from what they forbid. -DIVIDER-
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The social basis of righteousness also appears in the frequent contrast between δίκη and βία , right and force. A violation of right is that which forces its way over the social sanction. The social conception of δίκαιος is not lost, even when the idea is so apprehended as to border on the christian love of one's neighbor. There is a wrong toward the gods, but every wrong is not in itself such. The inner, personal relation to deity, the absolute and constraining appeal of divine character and law to conscience, the view of duty as one's right, and of personal right as something to be surrendered to the paramount claim of love - all these elements which distinguish the christian conception of righteousness - are thus in sharp contrast with a righteousness dictated by social claims which limit the individual desire or preference, but which leave untouched the tenacity of personal right, and place obligation behind legitimacy. -DIVIDER-
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It is desirable that the classical usage of these terms should be understood, in order to throw into sharper relief the Biblical usage, according to which God is the absolute and final standard of right, and every wrong is a sin against God (Psalm 51:4). Each man stands in direct and primary relation to the holy God as He is by the law of His own nature. Righteousness is union with God in character. To the Greek mind of the legendary age such a conception is both strange and essentially impossible, since the Greek divinity is only the Greek man exaggerated in his virtues and vices alike. According to the christian ideal, righteousness is character, and the norm of character is likeness to God. This idea includes all the social aspects of right. Love and duty toward God involve love and duty to the neighbor. -DIVIDER-
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Here must be noted a peculiar usage of δίκαιος righteousand δικαιοσύνη righteousnessin the Septuagint. They are at times interchanged with ἐλεημοσύνη mercyand ἔλεος kindnessThe Hebrew chesed kindness, though usually rendered by ἔλεος , is nine times translated by δικαιοσύνη righteousnessand once by δίκαιος righteousThe Hebrew tsedakah usually rendered by δικαιοσύνη , is nine times translated by ἐλεημοσύνη mercyand three times by ἔλεος kindnessCompare the Heb. and Sept. at Deuteronomy 6:25; Deuteronomy 24:13(15); Genesis 19:19; Genesis 24:27. This usage throws light on the reading δικαιοσύνην , Rev., righteousness (kindness? ), instead of ἐλεημοσύνην mercyA.V., alms, Matthew 6:1. Mr. Hatch (“Essays in Biblical Greek”) says that the meaning kindness is so clear in this passage that scribes, who were unaware of its existence, altered the text. He also thinks that this meaning gives a better sense than any other to Matthew 1:19“Joseph, being a kindly ( δίκαιος , A.V., just ) man.”-DIVIDER-
1. In the New Testament δίκαιος is used both of God and of Christ. Of God, 1 John 1:9; John 17:25; Revelation 16:5; Romans 3:26. Of Christ, 1 John 2:1; 1 John 3:7; Acts 3:14; Acts 7:52; Acts 22:14. In these passages the word characterizes God and Christ either in their essential quality or in their action; either as righteous according to the eternal norm of divine holiness (John 17:25; 1 John 3:7; Romans 3:26), or as holiness passes into righteous dealing with men (1 John 1:9). -DIVIDER-
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2. Δίκαιος is used of men, denoting their normal relation to the will and judgment of God. Hence it means virtuous, upright, pure in life, correct in thinking and feeling. It stands opposed to ἀνομία lawlessness ἁμαρτία sin ἀκαθαρσία impuritya contrast wanting in classical usage, where the conception of sin is vague. See Romans 6:13, Romans 6:16, Romans 6:18, Romans 6:20; Romans 8:10; 2 Corinthians 6:7, 2 Corinthians 6:14; Ephesians 5:9; Ephesians 6:14; Philemon 1:11; James 3:18. -DIVIDER-
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Where δικαιοσύνη righteousnessis joined with ὁσιότης holiness(Luke 1:75; Ephesians 4:24), it denotes right conduct toward men, as holiness denotes piety toward God. It appears in the wider sense of answering to the demands of God in general, Matthew 13:17; Matthew 10:41; Matthew 23:29; Acts 10:22, Acts 10:35; and in the narrower sense of perfectly answering the divine demands, guiltless. So of Christ, Acts 3:14; 1 Peter 3:18; 1 John 2:1. -DIVIDER-
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3. It is found in the classical sense of it is right, Philemon 1:7, or that which is right, Colossians 4:1. This, however, is included within the Christian conception. -DIVIDER-
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Δικαιοσύνη righteousnessis therefore that which fulfills the claims of δίκη right“It is the state commanded by God and standing the test of His judgment; the character and acts of a man approved of Him, in virtue of which the man corresponds with Him and His will as His ideal and standard” (Cremer). -DIVIDER-
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The medium of this righteousness is faith. Faith is said to be counted or reckoned for righteousness; i.e., righteousness is ascribed to it or recognized in it. Romans 4:3, Romans 4:6, Romans 4:9, Romans 4:22; Galatians 3:6; James 2:23. -DIVIDER-
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In this verse the righteousness revealed in the Gospel is described as a righteousness of God. This does not mean righteousness as an attribute of God, as in Romans 3:5; but righteousness as bestowed on man by God. The state of the justified man is due to God. The righteousness which becomes his is that which God declares to be righteousness and ascribes to him. Righteousness thus expresses the relation of being right into which God puts the man who believes. See further, on justified, Romans 2:13.Is revealed ( ἀποκαλύπτεται )Emphasizing the peculiar sense in which “righteousness” is used here. Righteousness as an attribute of God was revealed before the Gospel. Righteousness in this sense is a matter of special revelation through the Gospel. The present tense describes the Gospel in its continuous proclamation: is being revealed.From faith to faith ( ἐκ πίστεως εἰς πίστιν )Rev., by faith unto faith. According to the A.V. the idea is that of progress in faith itself; either from Old to New Testament faith, or, in the individual, from a lower to a higher degree of faith; and this idea, I think, must be held here, although it is true that it is introduced secondarily, since Paul is dealing principally with the truth that righteousness is by faith. We may rightly say that the revealed righteousness of God is unto faith, in the sense of with a view to produce faith; but we may also say that faith is a progressive principle; that the aim of God's justifying righteousness is life, and that the just lives by his faith (Galatians 2:20), and enters into “more abundant” life with the development of his faith. Compare 2 Corinthians 2:16; 2 Corinthians 3:18; 2 Corinthians 4:17; Romans 6:19; and the phrase, justification of life, Romans 5:18.sa40 [source]

1 Corinthians 1:9 Faithful [πιστὸς]
Emphatic, and therefore first in the sentence. See on 1 John 1:9; see on Revelation 1:5; see on Revelation 3:14. Compare 2 Timothy 2:13. [source]
1 Thessalonians 5:24 Faithful [πιστὸς]
Comp. 2 Timothy 2:13, and see on 1 John 1:9; see on Revelation 1:5; see on Revelation 3:14. [source]
2 Timothy 2:2 Faithful [πιστοῖς]
Not believing, but trusty, as appears from the context. See on 1 John 1:9; see on Revelation 1:5; see on Revelation 3:14. [source]
Titus 3:11 Sinneth [ἁμαρτάνει]
See on 1 John 1:9; see on Matthew 1:21, and see on trespasses, Matthew 6:14. [source]
Hebrews 8:12 Their sins and their iniquities [τῶν ἁμαρτιῶν αὐτῶν]
Omit and their iniquities. For ἁμαρτία sinsee on Matthew 1:21; and for both ἀδικία and ἁμαρτία , see on 1 John 1:9. Comp. 1 John 5:17. [source]
Hebrews 1:3 When he had by himself purged our sins [καθαρισμὸν τῶν ἁμαρτιῶν ποιησάμενος]
Omit by himself; yet a similar thought is implied in the middle voice, ποιησάμενος , which indicates that the work of purification was done by Christ personally, and was not something which he caused to be done by some other agent. Purged, lit. having made purification. The phrase N.T.olxx, Job 7:21. Καθαρισμός purificationoccurs in Mark, Luke John, 2nd Peter, oP., and only here in Hebrews. The verb καθαρίζειν topurify is not often used in N.T of cleansing from sin. See 2 Corinthians 7:1; 1 John 1:7, 1 John 1:9. Of cleansing the conscience, Hebrews 9:14. Of cleansing meats and vessels, Matthew 23:25, Matthew 23:26, Mark 7:19, Acts 10:15; Acts 11:9. Of cleansing the heart, Acts 15:9. The meaning here is cleansing of sins. In the phrase “to cleanse from sin,” always with ἀπὸ fromIn carrying on all things toward their destined end of conformity to the divine archetype, the Son must confront and deal with the fact of sin, which had thrown the world into disorder, and drawn it out of God's order. In the thought of making purification of sins is already foreshadowed the work of Christ as high priest, which plays so prominent a part in the epistle. [source]
1 John 4:15 Shall confess []
See on 1 John 1:9. [source]
1 John 2:29 Righteous [δίκαιος]
Used by John both of God and of Christ. Of God, 1 John 1:9; John 17:25; Revelation 16:5; of Christ, 1 John 2:1; 1 John 3:7. Compare Acts 3:14; Acts 7:52; Acts 22:14. [source]
1 John 2:1 The righteous []
Compare righteous, 1 John 1:9. There is no article in the Greek. Jesus Christ righteous. See on 1 John 1:9. [source]
1 John 1:7 And the blood of Jesus his Son cleanseth us from all sin [και το αιμα Ιησου του υιου αυτου καταριζει ημας απο πασης αμαρτιας]
This clause with και — kai in true Johannine style is coordinate with the preceding one. Walking in the light with God makes possible fellowship with one another and is made possible also by the blood of Jesus (real blood and no mere phantom, atoning blood of the sinless Son of God for our sins). John is not ashamed to use this word. It is not the mere “example” of Jesus that “cleanses” us from sin. It does cleanse the conscience and life and nothing else does (Hebrews 9:13.; Titus 2:14). See in 1 John 1:9 both forgiveness and cleansing. Cf. 1 John 3:3. [source]
1 John 1:7 Of Jesus Christ His Son []
Omit Christ. The human name, Jesus, shows that His blood is available for man. The divine name, His Son, shows that it is efficacious. I shall be rendering a service to students of John's Epistles by giving, in a condensed form, Canon Westcott's note, classifying the several names of our Lord and their uses in the Epistles. The name in John, as in the Bible elsewhere, has two distinct, but closely connected meanings. -DIVIDER-
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1. The Revelation of the Divine Being by a special title. -DIVIDER-
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2. The whole sum of the manifold revelations gathered up so as to form one supreme revelation. -DIVIDER-
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The latter sense is illustrated in 3 John 1:7, where “the name” absolutely includes the essential elements of the Christian creed, the complete revelation of Christ's work in relation to God and man. Compare John 20:31; Acts 5:41. -DIVIDER-
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In 1 John 2:12, the term is more limited, referring to Christ as He lived on earth and gave Himself for “the brethren.” In 1 John 3:23; 1 John 5:13, the exact sense is defined by what follows. -DIVIDER-
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Actual Names Used. -DIVIDER-
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(I.) His Son Jesus Christ. 1 John 1:3; 1 John 3:23; 1 John 5:20. The divine antecedent is differently described in each case, and the difference colors the phrase. In 1 John 1:2-3, the Father (compare 1John href="/desk/?q=1jo+3:23&sr=1">1 John 3:23, God. In 1 John 5:20, He that is true. Thus the sonship of Christ is regarded in relation to God as Father, as God, and as satisfying the divine ideal which man is able to form. The whole phrase, His Son Jesus Christ, includes the two elements of the confessions which John makes prominent. -DIVIDER-
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1. Jesus is the Son of God (John 4:15; John 5:5). -DIVIDER-
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2. Jesus is the Christ (John 2:22; John 5:1). -DIVIDER-
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The constituents of the compressed phrase are all used separately by John. -DIVIDER-
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(1.) Jesus. 1 John 2:22; 1 John 5:1; 1 John 4:3(where the correct reading omits Christ). The thought is that of the Lord in His perfect historic humanity. -DIVIDER-
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(2.) Christ. 2 John 1:9. Pointing to the preparation made under the old covenant. -DIVIDER-
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(3). Jesus Christ. 1 John 2:1; 1 John 5:6; 2 John 1:7. Combining the ideas of true humanity and messianic position. -DIVIDER-
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In 1 John 4:15, the reading is doubtful: Jesus or Jesus Christ. -DIVIDER-
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On 1 John 4:2, see note. -DIVIDER-
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(4.) The Son. 1 John 2:22, 1 John 2:23, 1 John 2:24; 1 John 4:14; 1 John 5:12. The absolute relation of Sonship to Fatherhood. -DIVIDER-
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(5.) The Son of God. 1 John 3:8; 1 John 5:10, 1 John 5:12, 1 John 5:13, 1 John 5:20. Compare His Son (1 John 4:10; 1 John 5:9), where the immediate antecedent is ὁ Θεός Godand 1 John 5:18, He that was begotten of God. Combination of the ideas of Christ's divine dignity and divine sonship. -DIVIDER-
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(6.) Jesus His (God's) Son. 1 John 1:7. Two truths. The blood of Christ is available and efficacious. -DIVIDER-
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(7). His (God's) Son, His only Son. 1 John 4:9. The uniqueness of the gift is the manifestation of love. -DIVIDER-
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The Son in various forms is eminently characteristic of the First and Second Epistles, in which it occurs more times than in all Paul's Epistles. -DIVIDER-
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Κύριος Lordis not found in the Epistles (omit from 2 John 1:3), but occurs in the Gospel, and often in Revelation. -DIVIDER-
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The expression, the blood of Jesus His Son, is chosen with a profound insight. Though Ignatius uses the phrase blood of God yet the word blood is inappropriate to the Son conceived in His divine nature. The word Jesus brings out His human nature, in which He assumed a real body of flesh and blood, which blood was shed for us.Cleanseth ( καθαρίζει )See on Mark 7:19. Not only forgives but removes. Compare Titus 2:14; Hebrews 9:13sq.; Hebrews 9:22sq.; Ephesians 5:26sq.; Matthew 5:8; 1 John 3:3. Compare also 1 John 1:9, where, forgive ( ἀφῇ ) and cleanse ( καθαρίσῃ ) occur, with an obvious difference of meaning. Note the present tense cleanseth. The cleansing is present and continuous. Alexander (Bishop of Derry) cites a striking passage from Victor Hugo (“Le Parricide”). The usurper Canute, who has had a share in his father's death, expiring after a virtuous and glorious reign, walks towards the light of heaven. But first he cuts with his sword a shroud of snow from the top of Mt. Savo. As he advances towards heaven, a cloud forms, and drop by drop his shroud is soaked with a rain of blood.All sin ( πάσης ἁμαρτίας )The principle of sin in all its forms and manifestations; not the separate manifestations. Compare all joy (James 1:2); all patience (2 Corinthians 7:12); all wisdom (Ephesians 1:8); all diligence (2 Peter 1:5). [source]

1 John 1:7 Cleanseth [καθαρίζει]
See on Mark 7:19. Not only forgives but removes. Compare Titus 2:14; Hebrews 9:13sq.; Hebrews 9:22sq.; Ephesians 5:26sq.; Matthew 5:8; 1 John 3:3. Compare also 1 John 1:9, where, forgive ( ἀφῇ ) and cleanse ( καθαρίσῃ ) occur, with an obvious difference of meaning. Note the present tense cleanseth. The cleansing is present and continuous. Alexander (Bishop of Derry) cites a striking passage from Victor Hugo (“Le Parricide”). The usurper Canute, who has had a share in his father's death, expiring after a virtuous and glorious reign, walks towards the light of heaven. But first he cuts with his sword a shroud of snow from the top of Mt. Savo. As he advances towards heaven, a cloud forms, and drop by drop his shroud is soaked with a rain of blood. [source]
1 John 1:7 As he [ως αυτος]
As God is light (1 John 1:5) and dwells in light unapproachable (1 Timothy 6:16).One with another (μετ αλληλων — met' allēlōn). As he has already said in 1 John 1:3. But we cannot have fellowship with one another unless we have it with God in Christ, and to do that we must walk in the light with God.And the blood of Jesus his Son cleanseth us from all sin This clause with και — kai in true Johannine style is coordinate with the preceding one. Walking in the light with God makes possible fellowship with one another and is made possible also by the blood of Jesus (real blood and no mere phantom, atoning blood of the sinless Son of God for our sins). John is not ashamed to use this word. It is not the mere “example” of Jesus that “cleanses” us from sin. It does cleanse the conscience and life and nothing else does (Hebrews 9:13.; Titus 2:14). See in 1 John 1:9 both forgiveness and cleansing. Cf. 1 John 3:3. [source]
Revelation 1:5 The faithful witness [ὁ μάρτυς ὁ πιστὸς]
For the phraseology see on 1 John 4:9. For witness, see on John 1:7; see on 1 Peter 5:1. As applied to the Messiah, see Psalm 89:37; Isaiah 55:4. The construction again departs from the grammatical rule. The words witness, first-born, ruler, are in the nominative case, instead of being in the genitive, in apposition with Jesus Christ. This construction, though irregular, nevertheless gives dignity and emphasis to these titles of the Lord. See on Revelation 1:4. The word πιστὸς , faithful is used (1), of one who shows Himself faithful in the discharge of a duty or the administration of a trust (Matthew 24:45; Luke 12:42). Hence, trustworthy (1 Corinthians 7:25; 2 Timothy 2:2). Of things that can be relied upon (1 Timothy 3:1; 2 Timothy 2:11). (2), Confiding; trusting; a believer (Galatians 3:9; Acts 16:1; 2 Corinthians 6:15; 1 Timothy 5:16). See on 1 John 1:9. The word is combined with ἀληθινός , true, genuine in Revelation 3:14; Revelation 19:11; Revelation 21:5; Revelation 22:6. Richard of St. Victor (cited by Trench) says: “A faithful witness, because He gave faithful testimony concerning all things which were to be testified to by Him in the world. A faithful witness, because whatever He heard from the Father, He faithfully made known to His disciples. A faithful witness, because He taught the way of God in truth, neither did He care for any one nor regard the person of men. A faithful witness, because He announced condemnation to the reprobate and salvation to the elect. A faithful witness, because He confirmed by miracles the truth which He taught in words. A faithful witness, because He denied not, even in death, the Father's testimony to Himself. A faithful witness, because He will give testimony in the day of judgment concerning the works of the good and of the evil.” [source]

What do the individual words in 1 John 1:9 mean?

If we should confess the sins of us faithful He is and just that He may forgive us [our] might cleanse us from all unrighteousness
ἐὰν ὁμολογῶμεν τὰς ἁμαρτίας ἡμῶν πιστός ἐστιν καὶ δίκαιος ἵνα ἀφῇ ἡμῖν τὰς καθαρίσῃ ἡμᾶς ἀπὸ πάσης ἀδικίας

ὁμολογῶμεν  we  should  confess 
Parse: Verb, Present Subjunctive Active, 1st Person Plural
Root: ὁμολογέω  
Sense: to say the same thing as another, i.
ἁμαρτίας  sins 
Parse: Noun, Accusative Feminine Plural
Root: ἁμαρτία  
Sense: equivalent to 264.
ἡμῶν  of  us 
Parse: Personal / Possessive Pronoun, Genitive 1st Person Plural
Root: ἐγώ  
Sense: I, me, my.
πιστός  faithful 
Parse: Adjective, Nominative Masculine Singular
Root: πιστός  
Sense: trusty, faithful.
ἐστιν  He  is 
Parse: Verb, Present Indicative Active, 3rd Person Singular
Root: εἰμί  
Sense: to be, to exist, to happen, to be present.
δίκαιος  just 
Parse: Adjective, Nominative Masculine Singular
Root: δίκαιος  
Sense: righteous, observing divine laws.
ἵνα  that 
Parse: Conjunction
Root: ἵνα  
Sense: that, in order that, so that.
ἀφῇ  He  may  forgive 
Parse: Verb, Aorist Subjunctive Active, 3rd Person Singular
Root: ἀφίημι 
Sense: to send away.
ἡμῖν  us 
Parse: Personal / Possessive Pronoun, Dative 1st Person Plural
Root: ἐγώ  
Sense: I, me, my.
τὰς  [our] 
Parse: Article, Accusative Feminine Plural
Root:  
Sense: this, that, these, etc.
καθαρίσῃ  might  cleanse 
Parse: Verb, Aorist Subjunctive Active, 3rd Person Singular
Root: καθαρίζω 
Sense: to make clean, cleanse.
ἡμᾶς  us 
Parse: Personal / Possessive Pronoun, Accusative 1st Person Plural
Root: ἐγώ  
Sense: I, me, my.
ἀδικίας  unrighteousness 
Parse: Noun, Genitive Feminine Singular
Root: ἀδικία  
Sense: injustice, of a judge.