But thou, O LORD, art a shield for me; my glory, and the lifter up of mine head. Thou, O Lord art a shield - As a shield covers and defends the body from the strokes of an adversary, so wilt thou cover and defend me from them that rise up against me.
The lifter up of mine head - Thou wilt restore me to the state from which my enemies have cast me down. This is the meaning of the phrase; and this he speaks prophetically. He was satisfied that the deliverance would take place, hence his confidence in prayer; so that we find him, with comparative unconcern, laying himself down in his bed, expecting the sure protection of the Almighty.