'Number' in the Bible

and Joshua said to them, Pass before the ark of Jehovah your God into the midst of the Jordan, and lift up each of you a stone and put it upon his shoulder, according to the number of the tribes of the children of Israel,

And the children of Israel did so, as Joshua had commanded, and took up twelve stones out of the midst of the Jordan, as Jehovah had spoken to Joshua, according to the number of the tribes of the children of Israel; and they carried them over with them to the lodging-place, and laid them down there.