9-13. John’s Gospel is a Gospel of rejection. The foundational irony is that Jesus came to the very people expecting Him, and they rejected Him (Köstenberger). We might have expected the opposite: that the Jews would not have shared Jesus with the world. The great tragedy is their rejection of Him (Lenski). It is better to be the poorest child of God than the richest child of Abraham.
9. The word “true” is probably contrasted with the imperfect light of John the Baptist (Barrett). The word “gives light to” can also mean “expose” or “reveal.” This does not mean what the Quakers said it was (some kind of inner light of revelation). Rather, the true Light divides the race (Carson). The phrase “coming into the world” is to be taken with the Light, not with “man.” It is the light coming into the world in this verse, not man coming into the world.
10-11. Isaiah 1:2-3 is a good commentary here: nature knows God, but the people do not.
10. The first two clauses of the verse refer to the time before the Incarnation. The point, then, of verses 9-10 is that both before and after the Incarnation, there was both light and the rejection of light. The bare fact of the Incarnation is not enough to prevent people from rejecting the light. We are not saved by the Incarnation of Christ alone, as important as that doctrine is. “Knowledge” is another important theme in John’s Gospel. Knowledge of God, of course, does not refer merely to knowing things about God, but includes also knowing Him personally. Cf. the biblical use of a husband “knowing” his wife. Not knowing means rejection (Lenski).
11. The first “His own” refers to His own possessions, which could refer either to the entire world, or to the land of Israel. “His own people,” however, refers most definitely to the Jews, who rejected Him. This would favor the latter interpretation for the first “His own.”
12. There is always a remnant (Carson). “Believing in the name” means believing in that person (Morris). The word for “power” means “right” or “authority.” Now this does not refer merely to a possibility being created, but refers to a change in the person.
13. The three negations have in common human agency. The Jews would be the group most likely to see bloodlines and human agency as what constitutes us as children of God (see especially chapter 8). It is probable that John has in mind here an allusion (not explicit) to the Virgin Birth, such that our spiritual births follow the pattern of Christ’s physical birth in being initiated and empowered by God alone, quite apart from any human agency (Barrett). The first negation probably refers to bloodlines (plural for the father and mother). The second negation seems to refer to the sexual urge. The third negation refers to any possible human volition. Chapter 3, of course, is the big commentary on being born of God, which happens through regeneration and adoption. We can then truly say “Our Father.”