Joshua 6:11KJV

9And the armed men went before the priests that blew with the trumpets, and the rereward came after the ark, going on, and blowing with the trumpets.

10And Joshua had commanded the people, saying, Ye shall not shout, nor make any noise with your voice, neither shall word proceed out of your mouth, until the day I bid you shout; then shall ye shout.

11So the ark of the LORD compassed the city, going about once: and they came into the camp, and lodged in the camp.

12And Joshua rose early in the morning, and the priests took up the ark of the LORD.

13And 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, going on, and blowing with the trumpets.