And those twelve stones, which they took out of the Jordan, Joshua set up in Gilgal. And he said to the people of Israel, “When your children ask their fathers in time to come, ‘What do these stones mean?’ then you shall let your children know, ‘Israel passed over this Jordan on dry ground.’ ” Joshua 4:20–22, RSV. Those weren’t just any old rocks! Each had special meaning. They were stones of remembrance, stones of history. The rocks themselves were common enough,