Joshua 3:3, 6, 15-17

and they commanded the people, saying, “When you see the ark of the covenant of the LORD your God, and the priests, the Levites, bearing it, then you shall set out from your place and go after it.

Then Joshua spoke to the priests, saying, “Take up the ark of the covenant and cross over before the people.” So they took up the ark of the covenant and went before the people.

and as those who bore the ark came to the Jordan, and the feet of the priests who bore the ark dipped in the edge of the water (for the Jordan overflows all its banks during the whole time of harvest), that the waters which came down from upstream stood still, and rose in a heap very far away at Adam, the city that is beside Zaretan. So the waters that went down into the Sea of the Arabah, the Salt Sea, failed, and were cut off; and the people crossed over opposite Jericho. Then the priests who bore the ark of the covenant of the LORD stood firm on dry ground in the midst of the Jordan; and all Israel crossed over on dry ground, until all the people had crossed completely over the Jordan.