Joshua 6:1-3 (NKJV)
¹  Now Jericho was securely shut up because of the children of Israel; none went out, and none came in.
²  And the LORD said to Joshua: “See! I have given Jericho into your hand, its king, and the mighty men of valor.
³  You shall march around the city, all you men of war; you shall go all around the city once. This you shall do six days.