Deuteronomy 7:12-16

“Then it shall come about, because you listen to these judgments and keep and do them, that the Lord your God will keep His covenant with you and His faithfulness which He swore to your forefathers.

And He will love you, bless you, and make you numerous; He will also bless the fruit of your womb and the fruit of your ground, your grain, your new wine, and your oil, the newborn of your cattle and the offspring of your flock, in the land which He swore to your forefathers to give you.

You shall be blessed above all peoples; there will be no sterile male or infertile female among you or among your cattle.

And the Lord will remove from you all sickness; and He will not inflict upon you any of the harmful diseases of Egypt which you have known, but He will give them to all who hate you.

You shall consume all the peoples whom the Lord your God will turn over to you; your eye shall not pity them, nor shall you serve their gods, for that would be a snare to you.