Titus 3:9-11 English Standard Version (ESV)

9 But avoid foolish controversies, genealogies, dissensions, and quarrels about the law, for they are unprofitable and worthless. 10 As for a person who stirs up division, after warning him once and then twice, have nothing more to do with him, 11 knowing that such a person is warped and sinful; he is self-condemned.