Titus 1:9-11

9He must hold firm to the trustworthy word as taught, so that he may be able to give instruction in sound doctrine and also to rebuke those who contradict it.

10For there are many who are insubordinate, empty talkers and deceivers, especially those of the circumcision party.

11They must be silenced, since they are upsetting whole families by teaching for shameful gain what they ought not to teach.