Joshua 6:12-14

Joshua got up early the next morning and the priests took up the ark of the LORD. The seven priests carrying the seven trumpets went forwards, 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. So on the second day they marched round the city once and returned to the camp. They did this for six days.