¹ tn The first ὅτι (Joti) in 3:20 may be understood either (1) as causal, “because if our heart condemns us,” or (2) as epexegetical (explanatory), “that if our heart condemns us.” There are two other instances of the combination ὅτι ἐάν (Joti ean) in 1 John, 3:2 and 5:14. In 3:14 the ὅτι clearly introduces an indirect discourse (content) clause following οἴδαμεν (oidamen). In 5:14 the ὅτι is epexegetical to a preceding statement (“and this is the confidence [ἡ παρρησία, Jh parrhsia] which we have before him, that if we ask anything according to his will he hears us”). This is analogous to the present situation, and the subject under discussion (the believer’s confidence before God) is also similar (cf. 3:21-22). It is thus more likely, by analogy, that the first ὅτι clause in 3:20, ὅτι ἐὰν καταγινώσκῃ ἡμῶν ἡ καρδία ({oti ean kataginwskh Jhmwn Jh kardia), should also be understood as epexegetical to the preceding clause, ἔμπροσθεν αὐτοῦ πείσομεν τὴν καρδίαν (emprosqen autou peisomen thn kardian, “and we convince our heart before him”).

² tn In Deut 25:1 LXX καταγινώσκω (kataginwskw) means “to condemn” in a context where it is in opposition to δικαιοῦν (dikaioun, “to acquit”). In Job 42:6 LXX (Symmachus) and Ezek 16:61 LXX (Symmachus) it is used of self-judgment or self-condemnation, and this usage is also found in the intertestamental literature (Sir 14:2). Testament of Gad 5:3 describes a person οὐχ ὑπ᾿ ἄλλου καταγινωσκόμενος ἀλλ᾿ ὑπὸ τῆς ἰδίας καρδίας (ouc Jup’ a[llou kataginwskomeno" all’ Jupo th" idia" kardia", “condemned not by another but by his own heart”). Thus the word has legal or forensic connotations, and in this context refers to the believer’s self-condemnation resulting from a guilty conscience concerning sin.

³ tn The use of two ὅτι (Joti) clauses in close succession is somewhat awkward, but this is nothing new for the author; and indeed he has twice previously used two ὅτι clauses in close proximity in 3:2 and 14. In both those instances the second ὅτι was understood as causal, and (1) some interpreters would do the same here. Unless one understands both of the ὅτι clauses in 3:20 as causal, however (an option rejected based on the analogy with 5:14, see the discussion in the note on “that” at the beginning of the present verse), the first ὅτι clause must be understood as parenthetical in order for the second to be causal. This results in an even more awkward construction. It seems most probable that (2) the second ὅτι clause in 3:20 should also be understood as epexegetical (explanatory), and resumptive to the first. The resultant meaning is as follows: “and we convince our heart before him, that if our heart condemns us, that God is greater than our heart and knows all things.”

⁴ tn The force of the γάρ (gar) at the beginning of 5:3 is similar to another introductory formula used by the author of 1 John, καὶ αὕτη ἐστίν (kai Jauth estin; used in 1:5; 5:4, 11, and 14). The γάρ draws an inference based on the preceding statements, particularly the one in 5:2b, regarding the love of God. If in 5:2 loving God and keeping his commandments is the key to knowing that we love God’s children, it is important to define what the love of God involves, and this is what the author is doing in 5:3. In fact, as the following ἵνα (Jina) clause makes clear, loving God consists in keeping his commandments.

⁵ tn Once again the genitive could be understood as (1) objective, (2) subjective, or (3) both. Here an objective sense is more likely (believers’ love for God) because in the previous verse it is clear that God is the object of believers’ love.

⁶ tn Contrary to the punctuation of NA²⁷ and UBS⁴, it is best to place a full stop (period) following τηρῶμεν (thrwmen) in 5:3. The subordinate clause introduced by ὅτι (Joti) at the beginning of 5:4 is related to the second half of 5:3 which begins with καί (kai). Καί is commonly used by the author to begin a new sentence, probably by analogy with the Hebrew vav consecutive.

⁷ tn The ὅτι (Joti) clause in 5:11 is epexegetical (explanatory) to the phrase καὶ αὕτη ἐστίν (kai Jauth estin) at the beginning of the verse and gives the content of the testimony for the first time: “And this is the testimony: that God has given us eternal life, and this life is in his Son.”

⁸ sn In understanding how “God’s testimony” (added to the three witnesses of 5:8) can consist of eternal life it is important to remember the debate between the author and the opponents. It is not the reality of eternal life (whether it exists at all or not) that is being debated here, but rather which side in the debate (the author and his readers or the opponents) possesses it (this is a key point). The letter began with a testimony that “the eternal life” has been revealed (1:2), and it is consummated here with the reception or acknowledgment of that eternal life as the final testimony. This testimony (which is God’s testimony) consists in eternal life itself, which the author and the readers possess, but the opponents do not. This, for the author, constitutes the final apologetic in his case against the opponents.