Titus 1:13-15

He certainly knew what he was talking about! For this reason, correct them thoroughly so that their lives will line up with the truths of our faith. Instruct them not to pay any attention to Jewish myths or follow the teachings of those who reject the truth. It’s true that all is pure to those who have pure hearts, but to the corrupt unbelievers nothing is pure. Their minds and consciences are defiled.