Isaiah 21:10

7 And he saw a chariot with a couple of horsemen, a chariot of asses, and a chariot of camels; and he hearkened diligently with much heed:

8 And he cried, A lion: My lord, I stand continually upon the watchtower in the daytime, and I am set in my ward whole nights:

9 And, behold, here cometh a chariot of men, with a couple of horsemen. And he answered and said, Babylon is fallen, is fallen; and all the graven images of her gods he hath broken unto the ground.

10 O my threshing, and the corn of my floor: that which I have heard of the LORD of hosts, the God of Israel, have I declared unto you.

11 The burden of Dumah. He calleth to me out of Seir, Watchman, what of the night? Watchman, what of the night?

12 The watchman said, The morning cometh, and also the night: if ye will enquire, enquire ye: return, come.

13 The burden upon Arabia. In the forest in Arabia shall ye lodge, O ye travelling companies of Dedanim.