Deuteronomy 7:15-23

And the LORD will protect you from all sickness. He will not let you suffer from the terrible diseases you knew in Egypt, but he will inflict them on all your enemies! “You must destroy all the nations the LORD your God hands over to you. Show them no mercy, and do not worship their gods, or they will trap you. Perhaps you will think to yourselves, ‘How can we ever conquer these nations that are so much more powerful than we are?’ But don’t be afraid of them! Just remember what the LORD your God did to Pharaoh and to all the land of Egypt. Remember the great terrors the LORD your God sent against them. You saw it all with your own eyes! And remember the miraculous signs and wonders, and the strong hand and powerful arm with which he brought you out of Egypt. The LORD your God will use this same power against all the people you fear. And then the LORD your God will send terror to drive out the few survivors still hiding from you! “No, do not be afraid of those nations, for the LORD your God is among you, and he is a great and awesome God. The LORD your God will drive those nations out ahead of you little by little. You will not clear them away all at once, otherwise the wild animals would multiply too quickly for you. But the LORD your God will hand them over to you. He will throw them into complete confusion until they are destroyed.