Devarim 16:3

Verse 3. You shall not mix or imbibe any false doctrine with these holy states; in them you shall receive pure good from heaven unmixed with evil, and regard it as most holy, even though it seem distasteful to the natural man; for deliverance from the unregenerate condition is thus rendered complete and thorough: and by this means the deliverance by the Lord from the unregenerate condition will be kept in view by the regenerate in all their alternating states.