² tn This ὅτι (Joti) clause, technically indirect discourse after πιστεύω (pisteuw), explains the content of the faith, a belief in God’s promise coming to pass.

¹ tc Although there may be only a slight difference in translation, the term translated as “trust” is the adjective πιστούς (pistous). This is neither as common nor as clear as the verb πιστεύω (pisteuw, “believe, trust”). Consequently, most mss have the present participle πιστεύοντας (pisteuonta"; Ì⁷² א C P Ψ 1739 Ï), or the aorist participle πιστεύσαντες (pisteusante"; 33 pc), while A B pc vg have the adjective. Thus, πιστούς is to be preferred. In the NT the adjective is routinely taken passively in the sense of “faithful” (BDAG 820 s.v. πιστός 1). That may be part of the force here as well: “you are now faithful to God,” although the primary force in this context seems to be that of trusting. Nevertheless, it is difficult to separate faith from faithfulness in NT descriptions of Christians’ dependence on God.

¹ 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.

¹ tn On the use of the πιστεύω + εἰς (pisteuw + ei") construction in John: The verb πιστεύω occurs 98 times in John (compared to 11 times in Matthew, 14 times in Mark [including the longer ending], and 9 times in Luke). One of the unsolved mysteries is why the corresponding noun form πίστις (pistis) is never used at all. Many have held the noun was in use in some pre-Gnostic sects and this rendered it suspect for John. It might also be that for John, faith was an activity, something that men do (cf. W. Turner, “Believing and Everlasting Life – A Johannine Inquiry,” ExpTim 64 [1952/53]: 50-52). John uses πιστεύω in 4 major ways: (1) of believing facts, reports, etc., 12 times; (2) of believing people (or the scriptures), 19 times; (3) of believing “in” Christ” (πιστεύω + εἰς + acc.), 36 times; (4) used absolutely without any person or object specified, 30 times (the one remaining passage is 2:24, where Jesus refused to “trust” himself to certain individuals). Of these, the most significant is the use of πιστεύω with εἰς + accusative. It is not unlike the Pauline ἐν Χριστῷ (en Cristw) formula. Some have argued that this points to a Hebrew (more likely Aramaic) original behind the Fourth Gospel. But it probably indicates something else, as C. H. Dodd observed: “πιστεύειν with the dative so inevitably connoted simple credence, in the sense of an intellectual judgment, that the moral element of personal trust or reliance inherent in the Hebrew or Aramaic phrase – an element integral to the primitive Christian conception of faith in Christ – needed to be otherwise expressed” (The Interpretation of the Fourth Gospel, 183).