Tit 1:13-14

13 And this account of them is [really] true. Because it is [true], rebuke them sharply [deal sternly, even severely with them], so that they may be sound in the faith and free from error,

14 [And may show their soundness by] ceasing to give attention to Jewish myths and fables or to rules [laid down] by [mere] men who reject and turn their backs on the Truth.
AMP