Joshua 6:9-11

Amplified Bible

⁹ The armed men went in front of the priests who blew the trumpets, and the rear guard came after the ark, while the priests continued to blow the trumpets. ¹⁰ But Joshua commanded the people, “You shall not shout [the battle cry] nor let your voice be heard nor let a word come out of your mouth, until the day I tell you to shout. Then you shall shout!” ¹¹ So Joshua had the ark of the Lord taken around the city [on the first day], circling it once; then they came back into the camp and spent the night in the camp.