Joshua 6:15-16, 20

And it came to pass on the seventh day, that they rose early at 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. And it came to pass at the seventh time, when the priests blew the trumpets, Joshua said unto the people, Shout; for Jehovah hath given you the city.

So the people shouted, and the priests blew the trumpets: and it came to pass, when the people heard the sound of the trumpet, that the people shouted with a great shout, and the wall fell down flat, so that the people went up into the city, every man straight before him, and they took the city.