Howl ye. He continues the same argument, and bids the inhabitants of Babylon howl. Not that he directs instruction to them, as if he hoped that it would be of any advantage, but, in foretelling what shall be their condition, he emphatically employs this form of direct address. For the day of the Lord is at hand. He calls it the day of the Lord, according to the usual custom of Scripture, because when the Lord delays his judgment, he appears to cease from the discharge of his office, like judges when they do not ascend the judgment-seat. This mode of expression deserves notice, for we would gladly subject God to our disposal, that he might immediately pass sentence against the wicked. But he has his own appointed time, and knows the seasons when it is proper both to punish the bad and to assist the good. It shall come as destruction from the Strong One. [1] He threatens that the severity of judgment will be such that the inhabitants of Babylon will have good reason not only to cry but to howl; because God displays his power to waste and destroy them. sdd (shadad) signifies to lay waste and plunder. From this verb is derived sdy, (Shaddai,) one of the names of God, which some render Almighty. There is therefore an elegant allusion to the derivation of the word; as if he had said, that the inhabitants of Babylon shall learn by their own destruction how appropriately God is called sdy, (Shaddai,) that is, strong and powerful to destroy. [2]

Footnotes

1 - From the Almighty. -- Eng. Ver.

2 - "sd msdy (shod mishshaddai). This title of God is here employed for the sake of the alliteration, destruction from the destroyer, from him who is all-powerful to destroy (sdd) (shadad) as well as to save." -- Rosenmuller

Howl ye - Ye inhabitants of Babylon, in view of the approaching destruction.
The day of the Lord - The time when Yahweh will inflict vengeance on you draws near (see the note at Isaiah 2:12; compare Isaiah 13:9).
As a destruction from the Almighty - Not as a desolation from man, but as destruction sent from him who has all power in heaven and on earth. Destruction meditated by man might be resisted; but destruction that should come from the Almighty must be final and irresistible. The word 'Almighty' שׁדי shadday, one of the names given to God in the Scriptures, denotes, properly, "one who is mighty," or who has all power; and is correctly rendered Almighty, or Omnipotent; Genesis 17:1; Genesis 28:3; Genesis 48:3; Exodus 6:3; Ruth 1:20; Job 5:17; Job 6:4, Job 6:14; Job 8:3, Job 8:5; Job 11:7; Job 13:4; Job 15:25. In the Hebrew here, there is a paronomasia or "pun" - a figure of speech quite common in the Scriptures, which cannot be retained in the translation - 'It shall come as a destruction (כשׁד keshod) from the Almighty (משׁדי mı̂shadday).'

Wail (f) ye; for the day of the LORD [is] at hand; it shall come as a destruction from the Almighty.
(f) You Babylonians.

Howl ye, for the day of the Lord is at hand,.... These words are an address to the Babylonians, who instead of rejoicing and feasting, as Belshazzar and his nobles were the night that Babylon was taken, had reason to howl and lament; seeing the day that the Lord had fixed for their destruction was very near, and he was just about to come forth as a judge to take vengeance on them; for though it was about two hundred and fifty years from the time of this prophecy, to the taking of Babylon, yet it is represented as at hand, to show the certainty of it, both for the comfort of the Jewish captives, when they should be in it, and for the awakening of the sluggish inhabitants, who were secure, and thought themselves out of danger:
it shall come as a destruction from the Almighty: suddenly, swiftly, and irresistibly: there is a beautiful paronomasia in the Hebrew text, "ceshod mishaddai" (c); as destruction from the destroyer; from God, who is able to save, and to destroy; he is almighty and all sufficient, so some render the word; the hand of God was visible in it.
(c) .

We have here the terrible desolation of Babylon by the Medes and Persians. Those who in the day of their peace were proud, and haughty, and terrible, are quite dispirited when trouble comes. Their faces shall be scorched with the flame. All comfort and hope shall fail. The stars of heaven shall not give their light, the sun shall be darkened. Such expressions are often employed by the prophets, to describe the convulsions of governments. God will visit them for their iniquity, particularly the sin of pride, which brings men low. There shall be a general scene of horror. Those who join themselves to Babylon, must expect to share her plagues, Revelation 18:4. All that men have, they would give for their lives, but no man's riches shall be the ransom of his life. Pause here and wonder that men should be thus cruel and inhuman, and see how corrupt the nature of man is become. And that little infants thus suffer, which shows that there is an original guilt, by which life is forfeited as soon as it is begun. The day of the Lord will, indeed, be terrible with wrath and fierce anger, far beyond all here stated. Nor will there be any place for the sinner to flee to, or attempt an escape. But few act as though they believed these things.

day of the Lord--day of His vengeance on Babylon (Isaiah 2:12). Type of the future "day of wrath" (Revelation 6:17).
destruction--literally, "a devastating tempest."
from the Almighty--not from mere man; therefore irresistible. "Almighty," Hebrew, Shaddai.

Then all sink into anxious and fearful trembling. "Howl; for the day of Jehovah is near; like a destructive force from the Almighty it comes. Therefore all arms hang loosely down, and every human heart melts away. And they are troubled: they fall into cramps and pangs; like a woman in labour they twist themselves: one stares at the other; their faces are faces of flame." The command הילילוּ (not written defectively, הלילוּ) is followed by the reason for such a command, viz., "the day of Jehovah is near," the watchword of prophecy from the time of Joel downwards. The Caph in ceshod is the so-called Caph veritatis, or more correctly, the Caph of comparison between the individual and its genus. It is destruction by one who possesses unlimited power to destroy (shōd, from shâdad, from which we have shaddai, after the form chaggai, the festive one, from châgag). In this play upon the words, Isaiah also repeats certain words of Joel (Joel 1:15). Then the heads hang down from despondency and helplessness, and the heart, the seat of lift, melts (Isaiah 19:1) in the heat of anguish. Universal consternation ensues. This is expressed by the word venibhâlu, which stands in half pause; the word has shalsheleth followed by psik (pasek), an accent which only occurs in seven passages in the twenty-one prose books of the Old Testament, and always with this dividing stroke after it.
(Note: For the seven passages, see Ewald, Lehrbuch (ed. 7), p. 224.)
Observe also the following fut. paragogica, which add considerably to the energy of the description by their anapaestic rhythm. The men (subj.) lay hold of cramps and pangs (as in Job 18:20; Job 21:6), the force of the events compelling them to enter into such a condition. Their faces are faces of flames. Knobel understands this as referring to their turning pale, which is a piece of exegetical jugglery. At the same time, it does not suggest mere redness, nor a convulsive movement; but just as a flame alternates between light and darkness, so their faces become alternately flushed and pale, as the blood ebbs and flows, as it were, being at one time driven with force into their faces, and then again driven back to the heart, so as to leave deadly paleness, in consequence of their anguish and terror.