Matthew Poole and continuators on Isaiah 21:9

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.

The sum of what I have discovered is this.

Not filled with Goods, as Chariots of Burden use to be; but providen with Men, to fight from or with them.

Understand, and a chariot of asses, and a chariot of camels; which is easily understood from v. 7. where they are expressed.

The Prophet Isaias, who set the Watchman; or the Lord, by whose Command he was set, v. 6. who here gives an Explication of the Vision.

Which is mentioned as an Evidence that she was fully conquered, because otherwise they would not have suffered their Idols to have been thrown to the Ground.

God, by the Hands of Cyrus, his Instrument. Or, it is an indefinite Speech, he hath broken, &c. for they are broken, &c.

Marginal references: Jer. 51. 8. Rev. 14. 8. & 18. 2.; Chap. 46. 1. Jer. 50. 2. & 51. 44.