Joshua 6:12

10Joshua commanded the people, saying, “You shall not shout nor let your voice be heard, neither shall any word proceed out of your mouth until the day I tell you to shout. Then you shall shout.”

11So he caused the LORD’s ark to go around the city, circling it once. Then they came into the camp, and stayed in the camp.

12Joshua rose early in the morning, and the priests took up the LORD’s ark.

13The seven priests bearing the seven trumpets of rams’ horns in front of the LORD’s ark went on continually, and blew the trumpets. The armed men went in front of them. The rear guard came after the LORD’s ark. The trumpets sounded as they went.

14The second day they marched around the city once, and returned into the camp. They did this six days.