Isaiah 28:20
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.
Cross-reference
Isaiah 59:6
Parallel
In Isaiah 59:6, their webs will not serve as clothing, they cannot cover themselves—direct parallel to the insufficient covering in the bed metaphor.
Isaiah 64:6
Parallel
In Isaiah 64:6, righteous deeds are like a polluted garment—unable to cover, just as the bed and blanket are inadequate.
Genesis 3:7
Parallel
In Genesis 3:7, Adam and Eve's fig-leaf coverings are a futile attempt to hide shame, like Isaiah's too-narrow blanket.