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Isaiah 21

1
The burden of the wilderness of the sea. As whirlwinds in the South sweep through, it comes from the wilderness, from an awesome land.
2
A grievous vision is declared to me. The treacherous man deals treacherously, and the destroyer destroys. Go up, Elam; attack! I have stopped all of Media’s sighing.
3
Therefore my thighs are filled with anguish. Pains have seized me, like the pains of a woman in labor. I am in so much pain that I can’t hear. I am so dismayed that I can’t see.
4
My heart flutters. Horror has frightened me. The twilight that I desired has been turned into trembling for me.
5
They prepare the table. They set the watch. They eat. They drink. Rise up, you princes, oil the shield!
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For the Lord said to me, “Go, set a watchman. Let him declare what he sees.
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When he sees a troop, horsemen in pairs, a troop of donkeys, a troop of camels, he shall listen diligently with great attentiveness.”
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He cried like a lion: “Lord, I stand continually on the watchtower in the daytime, and every night I stay at my post.
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Behold, here comes a troop of men, horsemen in pairs.” He answered, “Fallen, fallen is Babylon; and all the engraved images of her gods are broken to the ground.
10
You are my threshing, and the grain of my floor!” That which I have heard from the LORD of Armies, the God of Israel, I have declared to you.
11
The burden of Dumah. One calls to me out of Seir, “Watchman, what of the night? Watchman, what of the night?”
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The watchman said, “The morning comes, and also the night. If you will inquire, inquire. Come back again.”
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The burden on Arabia. You will lodge in the thickets in Arabia, you caravans of Dedanites.
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They brought water to him who was thirsty. The inhabitants of the land of Tema met the fugitives with their bread.
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For they fled away from the swords, from the drawn sword, from the bent bow, and from the heat of battle.
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For the Lord said to me, “Within a year, as a worker bound by contract would count it, all the glory of Kedar will fail,
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and the residue of the number of the archers, the mighty men of the children of Kedar, will be few; for the LORD, the God of Israel, has spoken it.”
Chapter overviewAI-generated

Overview.
This chapter delivers divine oracles against Babylon, Edom (Dumah), and Arabia, framing judgment as both imminent and certain. Through vivid imagery of invasion, fear, and collapse, the chapter emphasizes God’s sovereign control over the rise and fall of nations, particularly those hostile to His purposes. Babylon’s fall is proclaimed with dramatic finality, while shorter pronouncements on Edom and the Arabian tribes highlight the reach of divine judgment beyond Israel’s immediate neighbors.

Flow.

  • Begins with a vision of impending judgment on Babylon, depicted as a violent, inescapable storm from the wilderness, prompting deep anguish in the prophet.
  • Shifts to a command to appoint a watchman who, after vigilant waiting, announces Babylon’s fall with the cry, “Fallen, fallen is Babylon!”
  • Moves to an enigmatic dialogue with Edom (Dumah), where the watchman replies to repeated questioning about the night’s end with anticipation of both dawn and continuing darkness.
  • Concludes with a prophecy against Arabia, predicting desolation and military defeat for the tribes of Kedar within one year.

Connections.
Following chapter 20, which underscores the futility of trusting in human alliances (especially with Egypt and Cush), chapter 21 extends the theme of divine judgment on proud nations and the uncertainty faced by those outside God’s covenant. The watchman’s role here deepens the motif of spiritual vigilance introduced earlier, while the oracle against Babylon anticipates the more detailed condemnation in later chapters (e.g., ch. 47). The cry from Seir echoes the universal human longing for redemption amid darkness, which chapter 22 takes up in its examination of Jerusalem’s own accountability, turning the focus back to Judah’s need for faithfulness.

What it teaches.
God sovereignly directs the destinies of nations, bringing down the arrogant (as with Babylon) and fulfilling His word through prophetic witness (WCF 3.7; LC 10). The watchman’s duty reflects the seriousness of divine revelation and the certainty of judgment (; cf. HC LD 25). The oracle against Kedar and Dedan shows that God’s knowledge extends to all peoples, and His purposes cannot be thwarted (WCF 3.1; BC Article 12). The vision of Babylon’s fall points forward to the ultimate defeat of all powers opposed to God’s kingdom, a theme rooted in His covenant faithfulness to Israel (WCF 7.5; HC LD 19).

Apply.
When darkness seems long and answers delayed, wait in readiness for the Lord’s word, for His judgments come at the appointed hour.

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