Deuteronomy 7:1-2, 17-19

When GOD, your God, brings you into the country that you are about to enter and take over, he will clear out the superpowers that were there before you: the Hittite, the Girgashite, the Amorite, the Canaanite, the Perizzite, the Hivite, and the Jebusite. Those seven nations are all bigger and stronger than you are. GOD, your God, will turn them over to you and you will conquer them. You must completely destroy them, offering them up as a holy destruction to GOD. Don’t make a treaty with them. Don’t let them off in any way.

You’re going to think to yourselves, “Oh! We’re outnumbered ten to one by these nations! We’ll never even make a dent in them!” But I’m telling you, Don’t be afraid. Remember, yes, remember in detail what GOD, your God, did to Pharaoh and all Egypt. Remember the great contests to which you were eyewitnesses: the miracle-signs, the wonders, GOD’s mighty hand as he stretched out his arm and took you out of there. GOD, your God, is going to do the same thing to these people you’re now so afraid of.