Deuteronomy 7:12

9 Know therefore that Yahweh your God, he is God, the faithful God, who keeps covenant and lovingkindness with them who love him and keep his commandments to a thousand generations,

10 and repays those who hate him to their face, to destroy them: he will not be slack to him who hates him, he will repay him to his face.

11 You shall therefore keep the commandment, and the statutes, and the ordinances, which I command you this day, to do them.

12 It shall happen, because you listen to these ordinances, and keep and do them, that Yahweh your God will keep with you the covenant and the lovingkindness which he swore to your fathers:

13 and he will love you, and bless you, and multiply you; he will also bless the fruit of your body and the fruit of your ground, your grain and your new wine and your oil, the increase of your cattle and the young of your flock, in the land which he swore to your fathers to give you.

14 You shall be blessed above all peoples: there shall not be male or female barren among you, or among your cattle.

15 Yahweh will take away from you all sickness; and none of the evil diseases of Egypt, which you know, will he put on you, but will lay them on all those who hate you.