Numbers 19:13

Verse 13. And therefore every one acting from the falsity of evil which is no longer with him a ruling motive, and not confessing his error that the Lord may purify him, renders his worship of the Lord impure and separates himself from the truth; and he can only be restored by the application of the truth, which involves the confession that of himself he is nothing but evil, and hence that he is impure both as to understanding and will.