Shout!

When we shout during our worship the walls of our pride come tumbling down and strongholds are broken!

Psalms 47:1
Oh, clap your hands, all you peoples!  Shout to God with the voice of triumph!

Joshua 6:20 So the people shouted when the priests blew the trumpets. And it happened when the people heard the sound of the trumpet, and the people shouted with a great shout, that the wall fell down flat. Then the people went up into the city, every man straight before him, and they took the city.