'Bed' in the Bible

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.

Upon a high and lofty mountain hast thou set thy bed; thither also wentest thou up to offer sacrifice.

And behind the doors and the posts hast thou set up thy memorial: for thou hast uncovered thyself to another than me, and art gone up; thou hast enlarged thy bed, and made thee a covenant with them: thou lovedst their bed where thou sawest it.