and Joshua said to them: "Cross over before the ark of the LORD your God into the midst of the Jordan, and each one of you take up a stone on his shoulder, according to the number of the tribes of the children of Israel,
Joshua 4:5
Surrounding context
4:4 Then Joshua called the twelve men whom he had appointed from the children of Israel, one man from every tribe;
4:5 and Joshua said to them: "Cross over before the ark of the LORD your God into the midst of the Jordan, and each one of you take up a stone on his shoulder, according to the number of the tribes of the children of Israel,
4:6 that this may be a sign among you when your children ask in time to come, saying, "What do these stones mean to you?'