Joshua 6:4-5 ▼

4 Also seven priests shall carry seven trumpets of rams’ horns in front of the ark; then on the seventh day you shall march around the city seven times, and the priests shall blow the trumpets.

5 It shall be that when they make a long blast with the ram’s horn, and when you hear the sound of the trumpet, all the people shall shout with a great shout; and the wall of the city will fall down flat, and the people shall go up, everyone straight ahead.”