Titus 1:10-16 - Correct Whoever Teaches What Is Wrong
10 For there are many individuals who are unruly, empty talkers and deceivers, particularly those of the circumcision, whose mouths must be stopped; 11 for they upset whole households and, for filthy lucre's sake, teach what they ought not to teach. 12 By one of their own number, by a prophet of their own, it has been said, "Cretans are always liars, evil beasts, idle gluttons."
13 This testimony is true. So rebuke them sharply, 14 so as to make them sound in the faith, not giving heed to Jewish myths and commandments of men who turn away from the truth.
15 All things are pure to the pure; but to the contaminated and the faithless nothing is pure, nay, their very minds and consciences are tainted. 16 They profess to know God, but by their deeds they disown him; in that they are detestable, disobedient, and reprobate for good work of any sort.