Deu 8:19 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.

Deu 8:20 As the nations which the LORD destroyeth before your face, so shall ye s​hall ​perish;b​ecause ye would not be obedient unto the voice of the LORD your God.