¹ tn Once more there is the familiar difficulty of determining whether the phrase refers (1) to what precedes or (2) to what follows. Here, because ἐν τούτῳ (en toutw) is followed by a clause introduced by ὅταν (Jotan) which appears to be related, it is best to understand ἐν τούτῳ as referring to what follows. The following ὅταν clause is epexegetical to ἐν τούτῳ, explaining how we know that we love God’s children: “by this we know that we love God’s children, whenever we love God and keep his commandments.”

² tn Both ἐγνώκαμεν (egnwkamen) and πεπιστεύκαμεν (pepisteukamen) in 4:16 are perfect tenses, implying past actions with existing results. In this case the past action is specified as the recognition of (ἐγνώκαμεν) and belief in (πεπιστεύκαμεν) “the love which God has in us.” But what is the relationship between the two verbs γινώσκω (ginwskw) and πιστεύω (pisteuw)? (1) Some interpreters would see a different nuance in each. (2) But in the Gospel of John the two verbs frequently occur together in the same context, often in the same tense; examples may be found in John 6:69, 8:31-32, 10:38, 14:7-10, and 17:8. They also occur together in one other context in 1 John, 4:1-2. Of these John 6:69, Peter’s confession, is the closest parallel to the usage here: “We have come to believe [πεπιστεύκαμεν] and to know [ἐγνώκαμεν] that you are the holy One of God.” Here the order between “knowing” and “believing” is reversed from 1 John 4:16, but an examination of the other examples from the Gospel of John should make it clear that there is no difference in meaning when the order of the terms is reversed. It appears that the author considered both terms to describe a single composite action. Thus they represent a hendiadys which describes an act of faith/belief/trust on the part of the individual; knowledge (true knowledge) is an inseparable part of this act of faith.

³ tn The force of the preposition ἐν (en) in the phrase ἐν ἡμῖν (en Jhmin) in 4:16a is disputed: Although (1) “for” (in the sense of “on behalf of”) is possible and is a common English translation, the other uses of the same phrase in 4:9 (where it refers to God’s love for us) and 4:12 (where it refers to God’s indwelling of the believer) suggest that (2) the author intends to emphasize interiority here – a reference to God’s love expressed in believers. This is confirmed by the only other uses in 1 John of the verb ἔχω (ecw) with the preposition ἐν (3:15 and 5:10) both of which literally mean something in someone.

⁴ tn Once again μένω (menw) in its three occurrences in 4:16 looks at the mutual state of believers and God. No change of status or position is in view in the context, so the participle and both finite verbs are translated as “resides.”

⁵ sn The entire phrase fear has to do with punishment may be understood in two slightly different ways: (1) “fear has its own punishment” or (2) “fear has to do with [includes] punishment.” These are not far apart, however, and the real key to understanding the expression lies in the meaning of the word “punishment” (κόλασις, kolasis). While it may refer to torture or torment (BDAG 555 s.v. 1) there are numerous Koine references involving eternal punishment (2 Macc 4:38; T. Reu. 5:5; T. Gad 7:5) and this is also the use in the only other NT reference, Matt 25:46. In the present context, where the author has mentioned having confidence in the day of judgment (4:17), it seems virtually certain that eternal punishment (or fear of it) is what is meant here. The (only) alternative to perfected love, which results in confidence at the day of judgment, is fear, which has to do with the punishment one is afraid of receiving at the judgment. As 4:18b states, “the one who fears [punishment] has not been perfected in love.” It is often assumed by interpreters that the opposite to perfected love (which casts out fear) is imperfect love (which still has fear and therefore no assurance). This is possible, but it is not likely, because the author nowhere mentions ‘imperfect’ love, and for him the opposite of ‘perfected’ love appears to be not imperfect love but hate (cf. 4:20). In other words, in the antithetical (‘either/or’) categories in which the author presents his arguments, one is either a genuine believer, who becomes ‘perfected’ in love as he resides in love and in a mutually indwelling relationship with God (cf. 4:16b), or one is not a genuine believer at all, but one who (like the opponents) hates his brother, is a liar, and does not know God at all. This individual should well fear judgment and eternal punishment because in the author’s view that is precisely where such a person is headed.

⁶ tn Grk “punishment, and the person who fears.”

⁷ tn “Punishment” is not repeated in the Greek text at this point but is implied.

⁸ tn Grk “if anyone should say…”

⁹ tn “Yet” is supplied to bring out the contrast.

¹⁰ tn See note on the phrase “fellow Christian” in 2:9.

¹¹ tn See note on the phrase “fellow Christian” in 2:9.

¹² 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.