Joshua 6:9-13

And the armed men went ahead of the priests who blew the trumpets, and the rear guard came after the ark, while they continued to blow the trumpets.

But Joshua commanded the people, saying, “You shall not shout nor let your voice be heard, nor let a word proceed from your mouth, until the day I tell you, ‘Shout!’ Then you shall shout!”

So he had the ark of the Lord taken around the city, circling it once; then they came into the camp and spent the night in the camp.

Now Joshua got up early in the morning, and the priests took up the ark of the Lord.

Then the seven priests carrying the seven trumpets of rams’ horns in front of the ark of the Lord went on continually, and blew the trumpets; and the armed men went ahead of them, and the rear guard came after the ark of the Lord, while they continued to blow the trumpets.