Deuteronomy 7:12-18 KJV

10And repayeth them that hate him to their face, to destroy them: he will not be slack to him that hateth him, he will repay him to his face.

11Thou shalt therefore keep the commandments, and the statutes, and the judgments, which I command thee this day, to do them.

12Wherefore it shall come to pass, if ye hearken to these judgments, and keep, and do them, that the LORD thy God shall keep unto thee the covenant and the mercy which he sware unto thy fathers:

13And he will love thee, and bless thee, and multiply thee: he will also bless the fruit of thy womb, and the fruit of thy land, thy corn, and thy wine, and thine oil, the increase of thy kine, and the flocks of thy sheep, in the land which he sware unto thy fathers to give thee.

14Thou shalt be blessed above all people: there shall not be male or female barren among you, or among your cattle.

15And the LORD will take away from thee all sickness, and will put none of the evil diseases of Egypt, which thou knowest, upon thee; but will lay them upon all them that hate thee.

16And thou shalt consume all the people which the LORD thy God shall deliver thee; thine eye shall have no pity upon them: neither shalt thou serve their gods; for that will be a snare unto thee.

17If thou shalt say in thine heart, These nations are more than I; how can I dispossess them?

18Thou shalt not be afraid of them: but shalt well remember what the LORD thy God did unto Pharaoh, and unto all Egypt;

19The great temptations which thine eyes saw, and the signs, and the wonders, and the mighty hand, and the stretched out arm, whereby the LORD thy God brought thee out: so shall the LORD thy God do unto all the people of whom thou art afraid.

20Moreover the LORD thy God will send the hornet among them, until they that are left, and hide themselves from thee, be destroyed.