As the nations which the LORD destroys before you, so you shall perish, because you would not be obedient to the voice of the LORD your God.
Deuteronomy 8:20
Surrounding context
8:19 Then it shall be, if you by any means forget the LORD your God, and follow other gods, and serve them and worship them, I testify against you this day that you shall surely perish.
8:20 As the nations which the LORD destroys before you, so you shall perish, because you would not be obedient to the voice of the LORD your God.