Deuteronomy 7:21-24

You shall not be terrified of them; for the LORD your God, the great and awesome God, is among you. And the LORD your God will drive out those nations before you little by little; you will be unable to destroy them at once, lest the beasts of the field become too numerous for you. But the LORD your God will deliver them over to you, and will inflict defeat upon them until they are destroyed. And He will deliver their kings into your hand, and you will destroy their name from under heaven; no one shall be able to stand against you until you have destroyed them.