'Number' in the Bible

Joshua said to them, "Pass over before the ark of Yahweh your God into the middle of the Jordan, and each of you pick up a stone and put it on your shoulder, according to the number of the tribes of the children of Israel;

The children of Israel did as Joshua commanded, and took up twelve stones out of the middle of the Jordan, as Yahweh spoke to Joshua, according to the number of the tribes of the children of Israel; and they carried them over with them to the place where they lodged, and laid them down there.