Joshua 6:2-5

²And the LORD said unto Joshua, See, I have given into thine hand Jericho, and the king thereof, and the mighty men of valour. ³And ye shall compass the city, all ye men of war, and go round about the city once. Thus shalt thou do six days. ⁴And seven priests shall bear before the ark seven trumpets of rams' horns: and the seventh day ye shall compass the city seven times, and the priests shall blow with the trumpets. ⁵And it shall come to pass, that when they make a long blast with the ram's horn, and when ye hear the sound of the trumpet, all the people shall shout with a great shout; and the wall of the city shall fall down flat, and the people shall ascend up every man straight before him.