Deuteronomy 8:11, 19
Deuteronomy 8:11 KJV
Beware that thou forget not the LORD thy God, in not keeping his commandments, and his judgments, and his statutes, which I command thee this day
Deuteronomy 8:19 KJV
And it shall be, if thou do at all forget the LORD thy God, and walk after other gods, and serve them, and worship them, I testify against you this day that ye shall surely perish.