'Couch' in the Bible

I have been weary with my sighing, I meditate through all the night on my bed, With my tear my couch I waste.

Jehovah supporteth on a couch of sickness, All his bed Thou hast turned in his weakness.

If I have remembered Thee on my couch, In the watches -- I meditate on Thee.

'If I enter into the tent of my house, If I go up on the couch of my bed,

My path and my couch Thou hast fanned, And with all my ways hast been acquainted.

If I ascend the heavens -- there Thou art, And spread out a couch in Sheol, lo, Thee!