For the bed shall be short. By this metaphor he adorns the former statement; for he compares the reprobate, who are pressed down by the hand of God, to those who have concealed themselves in a "short and narrow bed," in which they can scarcely stretch their limbs or lift their head, and where, in short, instead of rest, they feel sharp pains. He means that the Jews will be shut up in such a manner that they shall be overwhelmed with the severity of their distresses, and that the "bed," which is given to man for rest, will be an instrument of torture. If they seek a "covering," he says that "it will be too short to wrap themselves in it," and that it is an addition to their former distress, that amidst those heavy calamities they will want all necessary comforts. He chose to express this by the metaphor of a "narrow covering," that they may know that their condition will be in the highest degree wretched; because the vengeance of God will pursue them on all sides, both above and below, so that they shall have no abatement or mitigation, and shall find no relief. The Lord employs these metaphors, in order to accommodate himself to our weakness; because otherwise we cannot understand how dreadful is the judgment of God. Hence therefore we learn how dreadful are the terrors which shake and confine wicked men, when the Lord pursues them; they search eagerly for places of concealment, and would willingly hide themselves in the center of the earth; but the Lord drags them forth to light, and confines and hems them in, so that they cannot move.

For the bed is shorter - This is evidently a proverbial saying, and means that they would find all their places of defense insufficient to secure them. They seek repose and security - as a man lies down to rest at night. But they find neither. His bed furnishes no rest; his scanty covering furnishes no security from the chills of the night. So it would be with those who sought protection in idols, in the promises of false prophets, and in the aid which might be obtained from Egypt. So it is with sinners. Their vain refuges shall not shield them. The bed on which they seek rest shall give them no repose; the covering with which they seek to clothe themselves shall not defend them from the wrath of God.

For the bed is shorter - A mashal or proverbial saying, the meaning of which is, that they will find all means of defense and protection insufficient to secure them, and cover them from the evils coming upon them. מסך massek, Isaiah 22:8, the covering, is used for the outworks of defense, the barrier of the country; and here, in the allegorical sense, it means much the same thing. Their beds were only mattresses laid on the floor; and the coverlet a sheet, or in the winter a carpet, laid over it, in which the person wrapped himself. For כהתכנס kehithcannes, it ought probably to be מהתכנס mehithcannes. Houbigant, Secker.

For the bed is (z) shorter than that [a man] can stretch himself [on it]: and the covering narrower than that he can wrap himself [in it].
(z) Your affliction will be so sore, that you are not able to endure it.

For the bed is shorter than that a man can stretch himself on it,.... When a bed is short, a man cannot lie at his full length, and at ease:
and the covering narrower than that he can wrap himself in it; when the bedclothes are narrow a man cannot cover himself with them, so as to be warm and comfortable. These proverbial expressions are interpreted by Kimchi of Jerusalem, when besieged by the Assyrian army, when the inhabitants of it were much straitened, distressed, and made uncomfortable; perhaps it may be better understood of the same city when besieged by the Romans, to which the Jews flocked from all parts, in such numbers, for shelter, that there was not room enough for them, at least not provision, and which was the cause of that great distress and miserable condition they were reduced to: in general, the design of the words may be to show that all refuges and shelters, all means made use of for safety and protection, by which they endeavoured to cover and secure themselves, would be insufficient; and particularly such that laid themselves at ease on the bed of their own righteousness, not submitting to Christ and his righteousness, and covered themselves with the rags of their own doings, and not with the garments of his salvation, would find themselves in a very uncomfortable and unsafe state.

Proverbial, for they shall find all their sources of confidence fail them; all shall be hopeless perplexity in their affairs.

For - For those lying refuges, to which you trust, will not be able to give you that protection, which you expect from them; no more than a man can stretch himself upon a bed that is too short for him.