Deuteronomy 7:9-11

American Standard Version

⁹ Know therefore that Jehovah thy God, he is God, the faithful God, who keepeth covenant and lovingkindness with them that love him and keep his commandments to a thousand generations, ¹⁰ and repayeth them that hate him to their face, to destroy them: he will not be slack to him that hateth him, he will repay him to his face. ¹¹ Thou shalt therefore keep the commandment, and the statutes, and the ordinances, which I command thee this day, to do them.