20. 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.