Deuteronomy 7:6-11

For you are a holy people [set apart] to the LORD your God; the LORD your God has chosen you out of all the peoples on the face of the earth to be a people for His own possession [that is, His very special treasure]. “The LORD did not love you and choose you because you were greater in number than any of the other peoples, for you were the fewest of all peoples. But because the LORD loves you and is keeping the oath which He swore to your fathers, the LORD has brought you out with a mighty hand and redeemed (bought) you from the house of slavery, from the hand of Pharaoh king of Egypt. Therefore know [without any doubt] and understand that the LORD your God, He is God, the faithful God, who is keeping His covenant and His [steadfast] lovingkindness to a thousand generations with those who love Him and keep His commandments; but repays those who hate Him to their faces, by destroying them; He will not hesitate with him who hates Him, He will repay him to his face. Therefore, you shall keep (follow, obey) the commandment and the statutes and judgments (precepts) which I am commanding you today.