Deuteronomy 4:26

4:26 I invoke heaven and earth as witnesses against you today that you will surely and swiftly be removed from the very land you are about to cross the Jordan to possess. You will not last long there because you will surely be annihilated.

Deuteronomy 8:19

8:19 Now if you forget the Lord your God at all and follow other gods, worshiping and prostrating yourselves before them, I testify to you today that you will surely be annihilated.

Deuteronomy 30:19

30:19 Today I invoke heaven and earth as a witness against you that I have set life and death, blessing and curse, before you. Therefore choose life so that you and your descendants may live!

Deuteronomy 32:46

32:46 he said to them, “Keep in mind all the words I am solemnly proclaiming to you today; you must command your children to observe carefully all the words of this law.