Deuteronomy 7:9-11

New Catholic Bible

⁹ Keep in mind, therefore, that the Lord, your God, is God. He is a faithful God who keeps his covenant of mercy to the thousandth generation toward those who love him and observe his commandments. ¹⁰ But upon those who hate him, he will avenge himself face to face, wiping them out. He will not delay in avenging himself face to face with those who hate him.^{[a] 11} Therefore, be careful to observe the commandments, statutes, and decrees that I give you today.