Joshua 6:8, 13

When Joshua finished speaking to the people, the seven priests began marching before the LORD. They carried the seven trumpets and blew them as they marched. The priests carrying the Ark of the Agreement with the LORD followed them.

The seven priests carried the seven trumpets and marched in front of the Ark of the LORD, blowing their trumpets. Soldiers with weapons marched in front of them, and other soldiers walked behind the Ark of the LORD. All this time the priests were blowing their trumpets.