Joshua 3:4-6 World English Bible (WEB)
4 Yet there shall be a space between you and it, about two thousand cubits[a] by measure. Don’t come near it, that you may know the way by which you must go; for you have not passed this way before.”
5 Joshua said to the people, “Sanctify yourselves; for tomorrow Yahweh will do wonders among you.”
6 Joshua spoke to the priests, saying, “Take up the ark of the covenant, and cross over before the people.” They took up the ark of the covenant, and went before the people.