This psalm and the next are a pair, probably composed during the Exile in Babylon. They are evidently derived in part from the old Tabernacle service, in which is found the beginning of this psalm and the end of the next, 1 Chronicles 16:1-43. Here we have the story of Jehovah's faithfulness to his Covenant and of Israel's ingratitude.
It is right to make known God's doings. Nothing touches men more quickly, or excites faith and hope more certainly, than to hear what others have experienced of God's saving health. Let us talk more often of His marvelous works. If God has forgiven you, even to ten thousand talents, confess it. If you have learned more of Christ's patience in His bearing with your sins and failures, tell it out. The salient points which stand out in our record of the past may be summarized under the same general headings as those of the psalmist. God has been mindful of His Covenant, ratified by the blood of his Son. He has shown his independence of human standards in choosing us, though we are absolutely unworthy to inherit His Kingdom. How often He has interposed in our behalf even when we have deserved the worst, saying, Touch not mine anointed! [source]
Chapter Summary: Psalms 105
1An exhortation to praise God, and to seek out his works 7The story of God's providence over Abraham 16Over Joseph 23Over Jacob in Egypt 26Over Moses delivering the Israelites 37Over the Israelites brought out of Egypt, fed in the desert, and planted in Canaan
What do the individual words in Psalms 105:9 mean?
[The covenant] whichHe madewithAbrahamand His oathto Isaac
Parse: Verb, Qal, Perfect, third person masculine singular
Root: כָּרַת
Sense: to cut, cut off, cut down, cut off a body part, cut out, eliminate, kill, cut a covenant.