Joshua 6:13-15

The armed men and the seven priests carrying the seven shofars marched in front of the ark of YAHWEH blowing their shofars continually, and the rear guard followed the ark of YAHWEH, while the trumpets kept sounding. On the second day, they circled the city once and again returned to the camp. They repeated this pattern for six days. On the seventh day, everyone rose at daybreak, and they marched around the city in the same manner seven times.