1 John 3:23

Context
3:23 Now¹ this is his commandment:² that we believe in the name of his Son Jesus Christ and love one another, just as he gave³ us the commandment.

1 John 5:14

Context

5:14 And this is the confidence that we have before him: that⁴ whenever⁵ we ask anything according to his will, he hears us.

[3:23] ¹tn The καί (kai) is epexegetical/explanatory (or perhaps resumptive) of the commandment(s) mentioned in the preceding verse.

[3:23] ²tn This verse begins with the phrase καὶ αὕτη ἐστίν (kai {auth estin; cf. the similar phrase in 3:11 and 1:5), which is explained by the following ἵνα (Jina) clause, “that we believe in the name of his Son Jesus Christ.” The ἵνα thus introduces a clause which is (1) epexegetical (explanatory) or (2) appositional. By analogy the similar phrase in 3:11 is also followed by an epexegetical ἵνα clause and the phrase in 1:5 by an epexegetical ὅτι (Joti) clause.

[3:23] ³sn The author of 1 John repeatedly attributes the commandments given to believers as given by God the Father, even though in John 13:34-35 it was Jesus who gave the commandment to love one another. 2 John 4-5 also attributes the commandment to love one another directly to the Father. Thus it is clear that God the Father is the subject of the verb gave here in 3:23.

[5:14] ⁴tn For the third time in 5:9-14 the author uses the construction αὕτη ἐστίν ({auth estin; 5:9, 11, 14). As in the previous instance (5:11) the ὅτι (Joti) clause which follows is epexegetical (explanatory) to the pronoun αὕτη and explains what the “confidence” (παρρησία, parrhsia) consists of (technically the subject is ἡ παρρησία, the predicate nominative is the pronoun αὕτη, and the ὅτι clause explains the predicate nominative): “And the confidence which we have before him is this, namely, that if we ask anything according to his will he hears us.”

[5:14] ⁵tn A third-class condition is introduced by ἐάν (ean) + present subjunctive. Because the apodosis also contains a present tense verb (ἀκούει, akouei) this belongs in a subcategory of third-class conditional sentences known as present general. In the Koine period ἐάν can mean “when” or “whenever” and is virtually the equivalent of ὅταν (Jotan; see BDAG 268 s.v. ἐάν 2). Thus the meaning here is, “whenever (i.e., if) we ask anything according to his will, then he hears us.”