Knowing that he that is such is perverted, and sins, being condemned of himself.
All Commentaries on Titus 3:11 Go To Titus 3
Tertullian of Carthage
AD 220
It is the same Paul who, in his epistle to the Galatians, counts “heresies” among “the sins of the flesh,” who also intimates to Titus that “a man who is a heretic” must be “rejected after the first admonition.” This is on the ground that “he that is perverted and commits sin as a selfcondemned man.” Indeed, in almost every epistle, when enjoining on us [the duty] of avoiding false doctrines, he sharply condemns heresies. Of these the practical effects are false doctrines, called in Greek heresis, a word used in the sense of that choice which a man makes when he either teaches them [to others] or takes up with them [for himself]. For this reason it is that he calls the heretic selfcondemned, because he has himself chosen that in which he is condemned.