I rejoiced greatly that I found among thy children such as walked in truth, as we received commandment from the Father.

For many deceivers [heretics, posing as Christians] have gone out into the world, those who do not acknowledge and confess the coming of Jesus Christ in the flesh (bodily form). This [person, the kind who does this] is the deceiver and the antichrist [that is, the antagonist of Christ].

for he who shows that respect to such a man, is accessary to his wicked actions.