Joshua 6:8, 13

And just as Joshua had commanded the people, the seven priests bearing the seven trumpets of rams’ horns before the LORD went forward, blowing the trumpets, with the ark of the covenant of the LORD following them.

And the seven priests bearing the seven trumpets of rams’ horns before the ark of the LORD walked on, and they blew the trumpets continually. And the armed men were walking before them, and the rear guard was walking after the ark of the LORD, while the trumpets blew continually.