7. chariot, &c.—rather, "a body of riders," namely, some riding in pairs on horses (literally, "pairs of horsemen," that is, two abreast), others on asses, others on camels (compare Isa 21:9; Isa 22:6). "Chariot" is not appropriate to be joined, as English Version translates, with "asses"; the Hebrew means plainly in Isa 21:7, as in Isa 21:9, "a body of men riding." The Persians used asses and camels for war [MAURER]. HORSLEY translates, "One drawn in a car, with a pair of riders, drawn by an ass, drawn by a camel"; Cyrus is the man; the car drawn by a camel and ass yoked together and driven by two postilions, one on each, is the joint army of Medes and Persians under their respective leaders. He thinks the more ancient military cars were driven by men riding on the beasts that drew them; Isa 21:9 favors this.

     9. chariot of men—chariots with men in them; or rather, the same body of riders, horsemen two abreast, as in Isa 21:7 [MAURER]. But HORSLEY, "The man drawn in a car with a pair of riders." The first half of this verse describes what the watchman sees; the second half, what the watchman says, in consequence of what he sees. In the interval between Isa 21:7 and Isa 21:9, the overthrow of Babylon by the horsemen, or man in the car, is accomplished. The overthrow needed to be announced to the prophet by the watchman, owing to the great extent of the city. HERODOTUS (1.131) says that one part of the city was captured some time before the other received the tidings of it.