Joshua 6:11-15

So the ark of the LORD compassed the city, going about it once: and they came into the camp, and lodged in the camp.

And Joshua rose early in the morning, and the priests took up the ark of the LORD.

And 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 rereward came after the ark of the LORD, the priests going on, and blowing with the trumpets.

And the second day they compassed the city once, and returned into the camp: so they did six days.

And it came to pass on the seventh day, that they rose early about the dawning of the day, and compassed the city after the same manner seven times: only on that day they compassed the city seven times.