Joshua 6:9-13

And the armed men went before the priests that blew with the trumpets, and the rereward came after the ark, the priests going on, and blowing with the trumpets.

And Joshua had commanded the people, saying, Ye shall not shout, nor make any noise with your voice, neither shall any word proceed out of your mouth, until the day I bid you shout; then shall ye shout.

So the ark of the LORD compassed the city, going about it once: and they came into the camp, and lodged in the camp.

And Joshua rose early in the morning, and the priests took up the ark of the LORD.

And seven priests bearing seven trumpets of rams’ horns before the ark of the LORD went on continually, and blew with the trumpets: and the armed men went before them; but the rereward came after the ark of the LORD, the priests going on, and blowing with the trumpets.