[2:3] 1 tn The translation of καί (kai) at the beginning of 2:3 is important for understanding the argument, because a similar καί occurs at the beginning of 1:5. The use here is not just a simple continuative or connective use, but has more of a resumptive force, pointing back to the previous use in 1:5.
[2:3] sn Now. The author, after discussing three claims of the opponents in 1:6, 8, and 10 and putting forward three counterclaims of his own in 1:7, 1:9, and 2:1, now returns to the theme of “God as light” introduced in 1:5. The author will now discuss how a Christian may have assurance that he or she has come to know the God who is light, again by contrast with the opponents who make the same profession of knowing God, but lack the reality of such knowledge, as their behavior makes clear.
[2:3] 2 tn Grk “know him.” (1) Many take the third person pronoun αὐτον (auton) to refer to Jesus Christ, since he is mentioned in 2:1 and the pronoun αὐτός (autos) at the beginning of 2:2 clearly refers to him. But (2) it is more likely that God is the referent here, since (a) the assurance the author is discussing here is assurance that one has come to know God (all the claims of the opponents in 1:5-2:11 concern knowing and having fellowship with the God who is light); (b) when Jesus Christ is explicitly mentioned as an example to follow in 1 John 2:6, the pronoun ἐκεῖνος (ekeinos) is used to distinguish this from previous references with αὐτός; (c) the καί (kai) which begins 2:3 is parallel to the καί which begins 1:5, suggesting that the author is now returning to the discussion of God who is light, a theme introduced in 1:5. The author will now discuss how a Christian may have assurance that he or she has come to know the God who is light.
[3:3] 3 tn “Focused” is not in the Greek text, but is supplied for clarity.
[3:3] 4 sn The verb translated purifies (ἁγνίζω, Jagnizw) is somewhat unusual here, since it is not common in the NT, and occurs only once in the Gospel of John (11:55). One might wonder why the author did not use the more common verb ἁγιάζω (Jagiazw), as in John 17:19, where Jesus prays, “On their behalf I consecrate myself, so that they may also be consecrated in the truth.” It is possible that there is some overlap between the two verbs and thus this is another example of Johannine stylistic variation, but the verb ἁγνίζω is used in the context of John 11:55, which describes ritual purification for the Passover, a usage also found in the LXX (Exod 19:10-11, Num 8:21). In this context the use of ἁγνίζω would remind the readers that, if they have the future hope of entering the Father’s presence (“seeing him as he is” in 3:2), they need to prepare themselves by living a purified lifestyle now, just as Jesus lived during his earthly life and ministry (cf. 2:6 again). This serves to rebut the opponents’ claims to moral indifference, that what the Christian does in the present life is of no consequence.
[3:3] 5 tn Grk “that one.” Context indicates a reference to Jesus here. The switch from αὐτός (autos) to ἐκείνος (ekeinos) parallels 1 John 2:6 (see note there). Since purity of life is mentioned in the context, this almost certainly refers to Jesus in his earthly life and ministry as the example believers should imitate (a major theme of the author throughout 1 John).
[3:3] 6 sn 1 John 3:1-3. All of 3:1-3 is a parenthesis within the present section in which the author reflects on what it means to be fathered by God, a subject he has mentioned at the end of 2:29. The sequence of the argument is then resumed by 3:4, which is in opposition to 2:29.
