Joshua 6:4-8

4Have seven priests carry seven rams’ horns in front of the ark. On the seventh day march around the city seven times, while the priests blow the horns.

5When you hear the signal from the ram’s horn, have the whole army give a loud battle cry. Then the city wall will collapse and the warriors should charge straight ahead.”

6So Joshua son of Nun summoned the priests and instructed them, “Pick up the ark of the covenant, and seven priests must carry seven rams’ horns in front of the ark of the Lord.”

7And he told the army, “Move ahead and march around the city, with armed troops going ahead of the ark of the Lord.”

8When Joshua gave the army its orders, the seven priests carrying the seven rams’ horns before the Lord moved ahead and blew the horns as the ark of the covenant of the Lord followed behind.