Deuteronomy 7:9, 12-13

Know therefore that the LORD your God, He is God, the faithful God, who keeps His covenant and His lovingkindness to a thousandth generation with those who love Him and keep His commandments

“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 His covenant and His lovingkindness which He swore to your forefathers. He will love you and bless you and multiply you; He will also bless the fruit of your womb and the fruit of your ground, your grain and your new wine and your oil, the increase of your herd and the young of your flock, in the land which He swore to your forefathers to give you.