Joshua 4:4-9

⁴ Then Joshua summoned the twelve men from the Israelites, whom he had appointed, one from each tribe. ⁵ Joshua said to them, "Pass on before the ark of the Lord your God into the middle of the Jordan, and each of you take up a stone on his shoulder, one for each of the tribes of the Israelites, ⁶ so that this may be a sign among you. When your children ask in time to come, "What do those stones mean to you?' ⁷ then you shall tell them that the waters of the Jordan were cut off in front of the ark of the covenant of the Lord. When it crossed over the Jordan, the waters of the Jordan were cut off. So these stones shall be to the Israelites a memorial forever." ⁸ The Israelites did as Joshua commanded. They took up twelve stones out of the middle of the Jordan, according to the number of the tribes of the Israelites, as the Lord told Joshua, carried them over with them to the place where they camped, and laid them down there. ⁹ (Joshua set up twelve stones in the middle of the Jordan, in the place where the feet of the priests bearing the ark of the covenant had stood; and they are there to this day.)