Save Me, O God
In You, O LORD, do I take refuge; let me never be put to shame! In Your righteousness deliver me and rescue me; incline Your ear to me, and save me! Be to me a rock of refuge, to which I may continually come.
Save Me, O God
First, one who has not yet lost hope in mammon and all the world and himself cannot hope in God. . . . Second, whoever does not hope in God who justifies the ungodly cannot be delivered in God's righteousness or be rescued. . . . Then follows and rescue me, namely, from this body, or with regard to the body. For even when the soul has been delivered through righteousness, we are still held through the body in the dangers and the captivity and exile of this life. Third, no one can say and save me except one who understands and acknowledges himself to be weak and sick and condemned. Therefore those who consider themselves saved and who are pleased with their own health in the flesh, in the world, and in riches do not pray, even if they have uttered these words. Fourth, having now been delivered, saved, and justified, there remains that the person be sent into battle and probation. But here he needs as his protector Him who was his Savior, for He who has begun is the One who also completes it (Philippians 1:6). Therefore he says, Be Thou unto me a God, a protector (v. 3), namely, from attacks.
From First Lectures on the Psalms, on Psalm 71 (Luther's Works 10:395-96)