Titus 1:13-15

13 The words that prophet said are true. So tell those people that they are wrong. You must be strict with them. Then they will become strong in the faith

14 and stop accepting Jewish stories. And they will stop following the commands of others who do not accept the truth.

15 To those who are pure, all things are pure. But to those who are full of sin and do not believe, nothing is pure. The thinking of those people has become evil and their knowledge of what is right has been ruined.