Deuteronomy 7:12-13, 15

“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.

The 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.