This chapter contains prophecies against Babylon, Idumea, and Arabia. The prophecy against Babylon is called "the burden of the desert of the sea"; whose enemies are described by the fierce manner of their coming, and by the land from whence they came, Isa 21:1 which vision being declared to the prophet, is called a grievous one; what made it so was treachery among themselves; and the Medes and Persians are invited to besiege them, Isa 21:2 their terror and distress upon it are represented by the pains of a woman in travail, whom the prophet personates, Isa 21:3 and by the methods they took to defend themselves, to which they were alarmed, when in the greatest security and jollity, Isa 21:5 all which is illustrated by the vision of the watchman, who saw the Medes and Persians on the march, signified by a chariot and a couple of horsemen, who declares the fall of Babylon, and the destruction of its gods, Isa 21:6 which would issue in the good and comfort of the church and people of God, Isa 21:10 then follows the prophecy against Idumea, which consists of a question put to the watchman, and his answer to it; to which an exhortation is added, Isa 21:11 and the chapter concludes with another prophecy against Arabia: the calamities threatened are lodging in a forest, thirst, famine, and fleeing from the sword Isa 21:13, and the time is fixed when all this should be, by which their glory would fail, and the number of their archers and mighty men be lessened; for the confirmation of which the divine testimony is annexed, Isa 21:16.
Ver. 1. The burden of the desert of the sea,.... That this is a prophecy of the destruction of Babylon is clear from the express mention both of the Medes and Persians, by whom it should be, and of Babylon itself, and its fall, Isa 21:2 which, though prophesied of before, is here repeated, partly for the certainty of it, and partly for the comfort of the people of the Jews, who would be captives in it, and so break off and prevent their confidence in a nation that would be ruined; and perhaps this prophecy might be delivered out about the time or on account of Merodach king of Babylon sending letters and a present to Hezekiah, who showed to his messengers all his treasures.
Babylon is here called "the desert of the sea", not because it was a desert land, for it was a very fruitful one; or because it would be laid desolate, and become as a wilderness; but either because there was one between that and the countries of Media and Persia, as Kimchi, from whence its destroyers would come; or rather, because it was, as the word may be rendered, a "plain", for so the land of Chaldea was, and the city of Babylon particularly was built in a plain, Ge 11:2 and because this country abounded with pools and lakes, which with the Hebrews are called seas; and especially since the city of Babylon was situated by the river Euphrates, which ran about it, and through it and which therefore is said to dwell upon many waters, Jer 51:13 hence it has this name of the desert of the sea; besides, Abydenus , from Megasthenes, informs us, that all the places about Babylon were from the beginning water, and were called a sea; and it should be observed that mystical Babylon is represented by a woman in a desert, sitting on many waters, which are interpreted of a multitude of people and nations, Re 17:1 and some here by "sea" understand the multitude of its riches, power, and people.
The Targum is,"the burden of the armies, which come from the wilderness, as the waters of the sea;''understanding it not of Babylon, but of its enemies and invaders, as follows:as whirlwinds in the south pass through; and nothing can hinder them, such is their force and power; they bear all before them, come suddenly, blow strongly, and there is no resisting them; see Zec 9:14:[so] it cometh from the desert; or "he", that is, Cyrus; or "it", the army under him, would come with like irresistible force and power as the southern whirlwinds do, which come from a desert country; at least that part of it in which their soldiers were trained up, and which in their march to Babylon must come through the desert, that lay, as before observed, between that and their country, and through which Cyrus did pass :from a terrible land; a land of serpents and scorpions, as Jarchi; or a land afar off, as Kimchi and Ben Melech; whose power and usage, or customs, were not known, and so dreaded, as the Medes and Persians were by Nitocris queen of Babylon, who took care to preserve her people, and prevent their falling into their hands.
The Targum is,"from a land in which terrible things are done.'' Apud Euseb. Prepar. Evangel. l. 9. c. 41. Xenophon. Cyropaedia, l. 5. c.