Joshua 8:32-33

32And he 1wrote there on the stones a copy of the Law of Moses, which 2he had written, in the presence of the sons of Israel.

333And all Israel with their elders, officers, and their judges were standing on both sides of the ark before the Levitical priests who carried the ark of the covenant of the Lord, the stranger as well as the native. Half of them stood in front of 4Mount Gerizim, and half of them in front of Mount Ebal, just as Moses the servant of the Lord had commanded at first to bless the people of Israel.