Joshua 3:10-13

10This is how you will know that the living God is among you and that he will certainly drive out before you the Canaanites, Hittites, Hivites, Perizzites, Girgashites, Amorites and Jebusites. 11See, the ark of the covenant of the Lord of all the earth will go into the Jordan ahead of you. 12Now then, choose twelve men from the tribes of Israel, one from each tribe. 13And as soon as the priests who carry the ark of the Lord—the Lord of all the earth—set foot in the Jordan, its waters flowing downstream will be cut off and stand up in a heap.”