As Christians we need to submit to God"s discipline in our lives because it will result in fullness of life and greater holiness and righteousness along with peace. [source][source][source]
". . . there may be an implied contrast between temporary human punishment and the permanent reward which is given to those who submit to divine discipline." [1][source]
God always designs discipline for our welfare even though it may not be pleasant to endure. [source][source][source]
"God whispers to us in our pleasures, speaks in our conscience, but shouts in our pains: it is His megaphone to rouse a deaf world." [2][source]
The title "Father of spirits" ( Hebrews 12:9) occurs only here in the New Testament (cf. Numbers 16:22; Numbers 27:16). It probably means something like "our spiritual Father," as some English versions translate it (TEV, NEB, JB), in contrast to our physical (earthly) fathers. [source][source][source]
This is one of the great sections in the New Testament that clarifies the reason for the Christian"s trials (cf. James 1; 1Peter). It is essential that we view our sufferings as the Lord"s discipline rather than as an indication of His displeasure, or worse, His hatred (cf. Deuteronomy 1:26-27) if we would persevere faithfully. There is a real as well as a linguistic connection between "discipline" and "disciple" and "discipleship."[source]