If you ever forget the LORD your God and go after other gods to worship and bow down to them, I testify against you today that you will surely perish.

Deuteronomy 4:26
I call heaven and earth as witnesses against you this day that you will quickly perish from the land that you are crossing the Jordan to possess. You will not live long upon it, but will be utterly destroyed.

Deuteronomy 30:18
I declare to you today that you will surely perish; you shall not prolong your days in the land that you are crossing the Jordan to possess.

Deuteronomy 31:20
When I have brought them into the land that I swore to give their fathers, a land flowing with milk and honey, they will eat their fill and prosper. Then they will turn to other gods and worship them, and they will reject Me and break My covenant.

Jeremiah 7:6
if you no longer oppress the foreigner and the fatherless and the widow, and if you no longer shed innocent blood in this place or follow other gods to your own harm,

Jeremiah 25:6
Do not follow other gods to serve and worship them, and do not provoke Me to anger with the works of your hands. Then I will do you no harm.'

Malachi 4:4
"Remember the law of My servant Moses, the statutes and ordinances I commanded him for all Israel at Horeb.

And it shall be, if you do at all forget the LORD your God, and walk after other gods, and serve them, and worship them, I testify against you this day that you shall surely perish.