Joshua 6:8-14

And it was so, that when Joshua had spoken to the people, the seven priests carrying the seven trumpets made of rams’ horns went on before the LORD and blew the trumpets; then the ark of the covenant of the LORD went behind them. 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. 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!” 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. Then Joshua got up early in the morning [on the second day], and the priests took up the ark of the LORD. The seven priests carrying the seven trumpets made of rams’ horns ahead of the ark of the LORD went on continually, blowing the trumpets; and the armed men went ahead of them and the rear guard came after the ark of the LORD, while the priests continued to blow the trumpets. On the second day they marched around the city once, and returned to the camp; they did this for six days.