Titus 3:8-11

8The word [is] faithful, and I desire that thou insist strenuously on these things, that they who have believed 1God may take care to pay diligent attention to good works. These things are good and profitable to men.

9But foolish questions, and genealogies, and strifes, and contentions about the law, shun; for they are unprofitable and vain.

10An heretical man after a first and second admonition have done with,

11knowing that such a one is perverted, and sins, being self-condemned.