Deuteronomy 7:9-12

9Therefore 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;

10but 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.

11Therefore, you shall keep (follow, obey) the commandment and the statutes and judgments (precepts) which I am commanding you today.

12“Then it shall come about, because you listen to these judgments and keep and do them, that the Lord your God will keep with you the covenant and the [steadfast] lovingkindness which He swore to your fathers.