For the bed is shorter than that a man can stretch himself on it: and the covering narrower than that he can wrap himself in it.
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.
The prophet, having reproved those that made a jest of the word of God, here goes on to reprove those that made a jest of the judgments of God, and set them at defiance; for he is a jealous God, and will not suffer either his ordinances or his providences to be brought into contempt.
Commenting on Isaiah 28:14-22
For the Lord shall rise up as in Mount Perazim,.... Where the Lord broke forth on David's enemies the Philistines, as the breach of waters; see Isa 28:17 and destroyed them, from whence the place had the name of Baalperazim, Sa2 5:20.