When the LORD your God brings you to the land that you are about to enter and possess, and He dislodges many nations before you - the Hittites, Girgashites, Amorites, Canaanites, Perizzites, Hivites, and Jebusites, seven nations much larger than you - and the LORD your God delivers them to you and you defeat them, you must doom them to destruction: grant them no terms and give them no quarter. You shall not intermarry with them: do not give your daughters to their sons or take their daughters for your sons. For they will turn your children away from Me to worship other gods, and the LORD's anger will blaze forth against you and He will promptly wipe you out. Instead, this is what you shall do to them: you shall tear down their altars, smash their pillars, cut down their sacred posts, and consign their images to the fire.

For you are a people consecrated to the LORD your God: of all the peoples on earth the LORD your God chose you to be His treasured people. It is not because you are the most numerous of peoples that the LORD set His heart on you and chose you - indeed, you are the smallest of peoples; but it was because the LORD favored you and kept the oath He made to your fathers that the LORD freed you with a mighty hand and rescued you from the house of bondage, from the power of Pharaoh king of Egypt.

Deuteronomy 7:1-8   

(JPS)