Joshua 3:9-13

So Joshua said to the children of Israel, “Come here, and hear the words of the LORD your God.” And Joshua said, “By this you shall know that the living God is among you, and that He will without fail drive out from before you the Canaanites and the Hittites and the Hivites and the Perizzites and the Girgashites and the Amorites and the Jebusites: Behold, the ark of the covenant of the Lord of all the earth is crossing over before you into the Jordan. Now therefore, take for yourselves twelve men from the tribes of Israel, one man from every tribe. And it shall come to pass, as soon as the soles of the feet of the priests who bear the ark of the LORD, the Lord of all the earth, shall rest in the waters of the Jordan, that the waters of the Jordan shall be cut off, the waters that come down from upstream, and they shall stand as a heap.”