Joshua 6:2-5

The LORD said to Joshua, “See, I have given Jericho into your hand, with its king and the valiant warriors. You shall march around the city, all the men of war circling the city once. You shall do so for six days. Also seven priests shall carry seven trumpets of rams’ horns before the ark; then on the seventh day you shall march around the city seven times, and the priests shall blow the trumpets. 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 will go up every man straight ahead.”