³ Everyone who has at heart a hope like that keeps himself pure, for he knows how pure Christ is.

Conduct will show who is a man’s spiritual father

^4-6 Everyone who commits sin breaks God’s law, for that is what sin is, by definition—a breaking of God’s law. You know, moreover, that Christ became man for the purpose of removing sin, and he himself was quite free from sin. The man who lives “in Christ” does not habitually sin. The regular sinner has never seen or known him.