Joshua 4:8-10

8And the children of Israel did so as Joshua commanded, and took up twelve stones from the midst of Jordan, as the LORD spoke Joshua, according to the number of the tribes of the children of Israel, and carried them over with them to the place where they lodged, and laid them down there. 9And Joshua set up twelve stones in the midst of Jordan, in the place where the feet of the priests who bore the ark of the covenant stood: and they are there to this day.

10For the priests who bore the ark stood in the midst of Jordan, until every thing was finished that the LORD commanded Joshua to speak to the people, according to all that Moses commanded Joshua: and the people hasted and passed over.