Joshua 6:12-14

And Joshua rose early in the morning, and the priests took up the ark of Jehovah. And the seven priests bearing the seven trumpets of rams’ horns before the ark of Jehovah went on continually, and blew the trumpets: and the armed men went before them; and the rearward came after the ark of Jehovah, the priests blowing the trumpets as they went. And the second day they compassed the city once, and returned into the camp: so they did six days.