1 John 2:29 New English Translation

²⁹If you know that he is righteous, you also know^[a] that everyone who practices righteousness has been fathered^[b] by him.

1 John 2:29 tn The mood of γινώσκετε (ginōskete) may be understood as (1) indicative or (2) imperative. It is better to understand the verb here as indicative, because in 1 John “knowledge” is something one has as a result of being a believer (2:3, 5, 20, 21; 3:16, 19, 24; 4:2, 13; 5:2) rather than something one has to be exhorted about. The change in verbs from οἶδα (oida) to γινώσκω (ginōskō) is another example of Johannine stylistic variation.
1 John 2:29 tn The verb γεννάω (gennaō) presents a translation problem: (1) should the passive be translated archaically “be begotten” (the action of the male parent; see BDAG 193 s.v. 1.a) or (2) should it be translated “be born” (as from a female parent; see BDAG 194 s.v. 2)? A number of modern translations (RSV, NASB, NIV) have opted for the latter, but (3) the imagery expressed in 1 John 3:9 clearly refers to the action of the male parent in procreating a child, as does 5:1 (“everyone who loves the father loves the child fathered by him”), and so a word reflecting the action of the male parent is called for here. The contemporary expression “fathered by” captures this idea.

New English Translation (NET)