Joshua 6:13-15

Then seven priests bearing seven trumpets of rams’ horns before the ark of the LORD went on continually and blew with the trumpets. And the armed men went before them. But the rear guard came after the ark of the LORD, while the priests continued blowing the trumpets. And the second day they marched around the city once and returned to the camp. So they did six days. But it came to pass on the seventh day that they rose early, about the dawning of the day, and marched around the city seven times in the same manner. On that day only they marched around the city seven times.