Deuteronomy 8:19-20

Darby Translation

¹⁹ And it shall be, if thou do at all forget Jehovah thy God, and go after other gods, and serve them, and bow down to them, I testify against you this day that ye shall utterly perish.

²⁰ As the nations which Jehovah is causing to perish before you, so shall ye perish; because ye would not hearken unto the voice of Jehovah your God.