Isaiah 21:5-12

5They prepare the table, they set the watch, they eat, they drink: rise up, ye princes, anoint the shield. 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; 9and, behold, here cometh a troop of men, horsemen in pairs. And he answered and said, Fallen, fallen is Babylon; and all the graven images of her gods are broken unto the ground.

10O thou my threshing, and the grain of my floor! that which I have heard from Jehovah of hosts, the God of Israel, have I declared unto you.

11The burden of Dumah.

One calleth unto me out of Seir, Watchman, what of the night? Watchman, what of the night? 12The watchman said, The morning cometh, and also the night: if ye will inquire, inquire ye: turn ye, come.