Joshua 3:1-3

Then Joshua rose early in the morning; and they set out from Acacia Grove and came to the Jordan, he and all the children of Israel, and lodged there before they crossed over. So it was, after three days, that the officers went through the camp; 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.