Isaiah 21:6-8

6For thus hath the Lord said unto me, Go, set a watchman; let him declare what he seeth: 7and when he seeth a troop, horsemen in pairs, a troop of asses, a troop of camels, he shall hearken diligently with much heed. 8And he cried as a lion: O Lord, I stand continually upon the watch-tower in the day-time, and am set in my ward whole nights;