Joshua 3:3, 6, 15-17

and they commanded the people, saying, When ye see the ark of the covenant of Jehovah your God, and the priests the Levites bearing it, then ye shall remove from your place, and go after it.

And Joshua spake unto the priests, saying, Take up the ark of the covenant, and pass over before the people. And they took up the ark of the covenant, and went before the people.

and when they that bare the ark were come unto the Jordan, and the feet of the priests that bare the ark were dipped in the brink of the water (for the Jordan overfloweth all its banks all the time of harvest), that the waters which came down from above stood, and rose up in one heap, a great way off, at Adam, the city that is beside Zarethan; and those that went down toward the sea of the Arabah, even the Salt Sea, were wholly cut off: and the people passed over right against Jericho. And the priests that bare the ark of the covenant of Jehovah stood firm on dry ground in the midst of the Jordan; and all Israel passed over on dry ground, until all the nation were passed clean over the Jordan.