They went out from us, but they didn't belong to us; for if they had belonged to us, they would have continued with us. But they left, that they might be revealed that none of them belong to us.

 2:22-23 Who is the liar but the man who denies that Jesus is the Anointed One of God? Antichrist is he who denies the Father and the Son. Anyone who denies the Son does not even have the Father; and everyone who acknowledges the Son has the Father also. 