If ye know (ean eidhte). Third-class condition again with ean and second perfect active subjunctive of oida. If ye know by intuitive or absolute knowledge that Christ (because of verse 2 Thessalonians 28 ) is righteous, then "ye know" or "know ye" (ginwskete either indicative or imperative) by experimental knowledge (so ginwskw means in contrast with oida). Is begotten (gegennhtai). Perfect passive indicative of gennaw, stands begotten, the second birth (regeneration) of John 3:3-8 . Of him (ex autou). Plainly "of God" in verse 1 John 2:9 and so apparently here in spite of dikaio referring to Christ. Doing righteousness is proof of the new birth.