Arise, O LORD; save me, O my God: for thou hast smitten all mine enemies upon the cheek bone; thou hast broken the teeth of the ungodly. Arise, O Lord - Though he knew that God had undertaken his defense, yet he knew that his continued protection depended on his continual prayer and faith. God never ceases to help as long as we pray. When our hands hang down, and we restrain prayer before him, we may then justly fear that our enemies will prevail.
Those blast smitten - That is, Thou wilt smite. He speaks in full confidence of God's interference; and knows as surely that he shall have the victory, as if he had it already. Breaking the jaws and the teeth are expressions which imply, confounding and destroying an adversary; treating him with extreme contempt; using him like a dog, etc.