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. 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.
Related Commentaries of Isaiah 28:20
Isaiah 28:20
20 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.