Joshua 6:8, 13

When Joshua had spoken to the people, the seven priests carrying the seven trumpets before the LORD went forward, blowing their trumpets, and the ark of the LORD’s covenant followed them.

The seven priests carrying the seven trumpets went forward, marching before the ark of the LORD and blowing the trumpets. The armed men went ahead of them and the rear guard followed the ark of the LORD, while the trumpets kept sounding.