At all turn - Rather, “If ye shall wholly turn from following Me.” (See 2 Chronicles 7:19.) The Israelites were not to be cut off, except for an entire defection.
Related Commentaries of 1 Kings 9:6
1 Kings 9:6
6 But if ye shall at all turn from following me, ye or your children, and will not keep my commandments and my statutes which I have set before you, but go and serve other gods, and worship them: