Joshua 4:5; Joshua 4:8

Joshua 4:5

5 and Joshua said to them, "Cross again to the ark of the LORD your God into the middle of the Jordan, and each of you take up a stone on his shoulder, according to the number of the tribes of the sons of Israel.

Joshua 4:8

8 Thus the sons of Israel did as Joshua commanded, and took up twelve stones from the middle of the Jordan, just as the LORD spoke to Joshua, according to the number of the tribes of the sons of Israel; and they carried them over with them to the lodging place and put them down there.