Joshua 8:32-33

32There on the stones he wrote a copy of the Torah of Moses, which he had written, in the presence of Bnei-Yisrael.

33Then all Israel, with their elders and officials, and their judges, were standing on both sides of the ark facing the Levitical kohanim carrying the ark of the covenant of Adonai—the outsider as well as the native-born. Half of them stood in front of Mount Gerizim and half of them in front of Mount Ebal—just as Moses the servant of Adonai had commanded before—in order to bless the people of Israel.