Religious deceivers have always been common, even back in Bible days. That’s what prompted the Apostle Paul to warn Titus,
“…there are many… vain talkers and deceivers, specially they of the circumcision: Whose mouths must be stopped…” (Titus 1:10,11).
But how did Paul expect Titus to go about shutting the mouths of these teachers of the Law? When one remembers what a tough man Titus was (cf. II Cor. 7:15), one shudders to think of how he might have chosen to shut the mouth of a deceitful vain talker! I hear Titus was so tough, he had a bearskin rug. The bear wasn’t dead, he was just afraid to move!
But while Titus was a tough man, he was also a saved man, and he knew there was a better way to shut the mouths of false teachers. Do you remember how the Lord did it when He was questioned by the chief priests, the scribes, and the Saducees (Luke 20:19-38)? He answered their questions so thoroughly that “after that they durst not ask Him any question at all” (v.40). In other words, He stopped their mouths.
And that’s how Paul expected Titus to shut the mouths of the vain talkers. He expected him to teach the grace of God so thoroughly and so convincingly that it would leave these vain talkers speechless. And that’s how God expects us to shut the mouths of deceivers who would teach the Law in our own day…not by mocking them, ridiculing them, or belittling them, but by presenting a clear presentation of the truth. source