Deuteronomy 7:8-10

8 He did it out of sheer love, keeping the promise he made to your ancestors. GOD stepped in and mightily bought you back out of that world of slavery, freed you from the iron grip of Pharaoh king of Egypt.

9 Know this: GOD, your God, is God indeed, a God you can depend upon. He keeps his covenant of loyal love with those who love him and observe his commandments for a thousand generations.

10 But he also pays back those who hate him, pays them the wages of death; he isn't slow to pay them off--those who hate him, he pays right on time.