¹ sn The one who hates his fellow Christian. The author’s paradigm for the opponents portrays them as those who show hatred for fellow Christians (Grk “brothers,” but not referring to one’s physical siblings). This charge will be much more fully developed in chap. 3, where the author will compare the opponents to Cain (who is the model for one who hates a brother, since he ultimately murdered his own brother). In 1 John 3:17 the specific charge against the opponents will be failing to give material aid to a brother in need.

² sn 1 John 2:3-11. The section 2:3-11 contains three claims to intimate knowledge of God, each introduced by the phrase the one who says (participles in the Greek text) in 2:4, 6, and 9. As with the three claims beginning with “if” in the previous section (1:6, 8, 10), these indirectly reflect the claims of the opponents. Each claim is followed by the author’s evaluation and its implications.

³ tn Once again there is the problem (by now familiar to the interpreter of 1 John) of determining whether the phrase ἐν τούτῳ (en toutw) in 3:10 refers (1) to what precedes or (2) to what follows. If it refers to what precedes, it serves to conclude the unit which began with 2:28. The remainder of 3:10 would then form a transition to the following material (another “hinge” passage). On the other hand, if the phrase ἐν τούτῳ refers to what follows, then the entirety of 3:10 is a summary statement at the end of 2:28-3:10 which recapitulates the section’s major theme (conduct is the clue to paternity), and provides at the same time a transition to the theme of loving one’s brother which will dominate the following section (3:11-24). Although R. E. Brown (Epistles of John [AB], 416) prefers to see the phrase as referring to the preceding material, it makes better sense to refer it to the remainder of 3:10 that follows, and see the entirety of 3:10 as both a summary of the theme of the preceding section 2:28-3:10 and a transition to the following section 3:11-24.

⁴ tn See note on the term “fellow Christian” in 2:9.

sn Does not love his fellow Christian. The theme of loving one’s fellow Christian appears in the final clause of 3:10 because it provides the transition to the second major section of 1 John, 3:11-5:12, and specifically to the following section 3:11-24. The theme of love will dominate the second major section of the letter (see 1 John 4:8).

⁵ tn See note on the phrase “fellow Christian” in 2:9.

⁶ sn Everyone who hates his fellow Christian is a murderer. On one level it is easy to see how the author could say this; the person who hates his brother is one and the same with the person who murders his brother. Behind the usage here, however, is John 8:44, the only other occurrence of the Greek word translated murderer (ἀνθρωποκτόνος, anqrwpoktonos) in the NT, where the devil is described as a “murderer from the beginning.” John 8:44 refers to the devil’s role in bringing death to Adam and Eve, but even more to his involvement (not directly mentioned in the Genesis account, but elaborated in the intertestamental literature, especially the writings of Philo) in Cain’s murder of his brother Abel. This was the first incident of murder in human history and also the first outward demonstration of the full implications of sin’s entry into the world. Ultimately, then, the devil is behind murder, just as he was behind Cain’s murder of Abel. When the hater kills, he shows himself to be a child of the devil (cf. 1 John 3:10). Once again, conduct is the clue to paternity.

⁷ tn The verb μένω (menw) in 3:15 refers to a spiritual reality (eternal life) which in this case does not reside in the person in question. To speak in terms of eternal life not “residing” in such an individual is not to imply that at some time in the past this person did possess eternal life and subsequently lost it, however. The previous verse (3:14) makes it clear that the individual under discussion here has “remained” in death (the realm of spiritual death) and so has never possessed eternal life to begin with, no matter what he may have claimed. Taken together with the use of μένω in 3:14, the use here implies that the opponents have “remained” in death all along, and have not ever been genuine believers. Thus “residing” rather than “remaining” is used as the translation for μένουσαν (menousan) here.

⁸ tn Here βίος (bios) refers to one’s means of subsistence – material goods or property (BDAG 177 s.v. 2).

sn Note the vivid contrast with Jesus’ example in the preceding verse: He was willing to lay down his very life, but the person in view in 3:17 is not even willing to lay down part of his material possessions for the sake of his brother.

⁹ tn See note on the phrase “fellow Christian” in 2:9.

¹⁰ tn Here a subjective genitive, indicating God’s love for us – the love which comes from God – appears more likely because of the parallelism with “eternal life” (ζωὴν αἰώνιον, zwhn aiwnion) in 3:15, which also comes from God.

sn The love of God. The author is not saying that the person who does not love his brother cannot love God either (although this may be true enough), but rather that the person who does not love his brother shows by this failure to love that he does not have any of the love which comes from God ‘residing’ in him (the Greek verb used is μένω [menw]). Once again, conduct is the clue to paternity.

¹¹ sn Once again the verb μένω (menw) is used of a spiritual reality (in this case the love of God) which does or does not reside in a person. Although the author uses the indefinite relative whoever (Grk ὃς δ᾿ ἄν, Jos d’ an), it is clear that he has the opponents in view here. This is the only specific moral fault he ever charges the opponents with in the entire letter. It is also clear that the author sees it as impossible that such a person, who refuses to offer help in his brother’s time of need (and thus ‘hates’ his brother rather than ‘loving’ him, cf. 3:15) can have any of the love which comes from God residing in him. This person, from the author’s dualistic ‘either/or’ perspective, cannot be a believer. The semantic force of the deliberative rhetorical question, “How can the love of God reside in such a person?”, is therefore a declarative statement about the spiritual condition of the opponents: “The love of God cannot possibly reside in such a person.”

¹² sn How can the love of God reside in such a person? is a rhetorical question which clearly anticipates a negative answer: The love of God cannot reside in such a person.

¹³ tn Grk “if anyone should say…”

¹⁴ tn “Yet” is supplied to bring out the contrast.

¹⁵ tn See note on the phrase “fellow Christian” in 2:9.

¹⁶ tn See note on the phrase “fellow Christian” in 2:9.

¹⁷ sn In 4:20 the author again describes the opponents, who claim to love God. Their failure to show love for their fellow Christians proves their claim to know God to be false: The one who does not love his fellow Christian whom he has seen cannot love God whom he has not seen.