Deuteronomy 7:14-20

You shall be blessed above all peoples; there will be no male or female barren among you or among your cattle. 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. You shall consume all the peoples whom the LORD your God will deliver to you; your eye shall not pity them, nor shall you serve their gods, for that would be a snare to you. “If you should say in your heart, ‘These nations are greater than I; how can I dispossess them?’ you shall not be afraid of them; you shall well remember what the LORD your God did to Pharaoh and to all Egypt: the great trials which your eyes saw and the signs and the wonders and the mighty hand and the outstretched arm by which the LORD your God brought you out. So shall the LORD your God do to all the peoples of whom you are afraid. Moreover, the LORD your God will send the hornet against them, until those who are left and hide themselves from you perish.