Psalms 3:7

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 ... save me. What thou hast done for me heretofore is the ground of MY confident prayer that thou wilt do so again. "Save me," and so show 'there is help (Hebrew, salvation) for me in God,' in opposition to their do so again. "Save me," and so show 'there is help (Hebrew, salvation) for me in God,' in opposition to their taunt (Psalms 3:2).

Smitten ... upon the cheek-bone - implying at once the shame and subjugation of his foes (Lamentations 3:30). An image also from wild beasts, which, when their jaw has been broken, and the teeth dashed out, can no longer hurt. David's foes, like so many wild beasts, would have "eaten up his flesh" (Psalms 27:2). But God renders them powerless; because David's foes are God's foes. He was the representative of religions principle: their hatred of him flowed from their hatred of God. 'The ungodly principle, which was put to the worse in Saul, sought afterward to regain the ascendant in Absalom, the center of the unrighteous party' (Hengstenberg). This forms the ground of his prayer. The expression, "MY God," marks David's close relation to God, as his claim upon God for help and salvation.