'Bed' in the Bible

For the bed is too short to stretch out on, and the blanket is too narrow to wrap oneself in.

On a high and lofty mountain you have set your bed; there also you went up to offer sacrifice.

Behind the doors and the posts you have set up your memorial: for you have uncovered to someone besides me, and have gone up; you have enlarged your bed, and made you a covenant with them: you loved their bed where you saw it.