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.

 2:18 Little children, it is the time of the last hour; and now many antichrists have risen, just as you heard that Antichrist was to come. That is how we know that it is the time of the last hour. 