Titus 3:9-12

But avoid foolish controversies and genealogies and arguments and quarrels about the law, because these are unprofitable and useless. Warn a divisive person once, and then warn them a second time. After that, have nothing to do with them. You may be sure that such people are warped and sinful; they are self-condemned. As soon as I send Artemas or Tychicus to you, do your best to come to me at Nicopolis, because I have decided to winter there.