Deuteronomy 7:9-15

9Know therefore that the Lord your God, 1He is God, 2the faithful God, 3who keeps 4His covenant and 5His lovingkindness to a thousandth generation with those who 6love Him and keep His commandments; 10but 7repays those who hate Him to 8their faces, to destroy 9them; He will not delay 10with him who hates Him, He will repay him to his face. 11Therefore, you shall keep the commandment and the statutes and the judgments which I am commanding you today, to do them.

12“11Then it shall come about, because you listen to these judgments and keep and do them, that the Lord your God will keep with you 12His covenant and 13His lovingkindness which He swore to your forefathers. 13He will 14love you and bless you and 15multiply 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, 16in the land which He swore to your forefathers to give you. 14You shall be blessed above all peoples; there will be no male or female 17barren among you or among your cattle. 1518The Lord will remove from you all sickness; and He will not put on you any of the harmful diseases of Egypt which you have known, but He will lay them on all who hate you.