Now Joshua had commanded the people, saying, "You shall not shout or make any noise with your voice, nor shall a word proceed out of your mouth, until the day I say to you, "Shout!' Then you shall shout."
Joshua 6:10
Surrounding context
6:9 The armed men went before the priests who blew the trumpets, and the rear guard came after the ark, while the priests continued blowing the trumpets.
6:10 Now Joshua had commanded the people, saying, "You shall not shout or make any noise with your voice, nor shall a word proceed out of your mouth, until the day I say to you, "Shout!' Then you shall shout."
6:11 So he had the ark of the LORD circle the city, going around it once. Then they came into the camp and lodged in the camp.