Here’s a wonderful selection from Martin Luther’s commentary on Psalm 51:1a (Have mercy on me, O God, because of your loyal love! NET). These comments have a lot to do with Luther’s critique of Rome’s “theology of glory.” Notice how Luther talked about God “clothed in His Word and promises,” which have to do with Christ. In fact, Luther’s contempt for the theology of glory had to do with his love for the biblical teaching of “Christ alone.” We don’t find a loving, merciful God apart from His Word which reveals the suffering Messiah; this is the theology of the cross. Here’s Luther’s comment:
“…Here at the very beginning [of the commentary on Psalm 51:1] you should be reminded of something so that you do not think that David is talking about God like a Mohammedan [Muslim] or like some other Gentile [unbeliever]. David is talking with the God of his fathers, with the God who promised. The people of Israel did not have a God who was viewed ‘absolutely,’ to use the expression, the way the inexperienced monks rise into heaven with their speculations and think about God as He is in Himself. From this ‘absolute God’ everyone should flee who does not want to perish, because human nature and the ‘absolute God’ are bitterest of enemies. Human weakness cannot help being crushed by such majesty, as Scripture reminds us over and over.
Let no one, therefore, interpret David as speaking with the ‘absolute God.’ He is speaking with God as He is dressed and clothed in His Word and promises, so that from the name ‘God’ we cannot exclude Christ, whom God promised to Adam and the other patriarchs. We must take hold of this God, not naked but clothed and revealed in His Word; otherwise certain despair will crush us. This distinction must always be made between the Prophets who speak with God and the Gentiles. The Gentiles speak with God outside His Word and promises, according to the thoughts of their own hearts; but the Prophets speak with God as He is clothed and revealed in His promises and Word. This God, clothed in such a kind appearance and, so to speak, in such a pleasant mask, that is to say, dressed in His promises—this God we can grasp and look at with joy and trust.
The above slightly edited quote is found in Martin Luther, Luther’s Works, Volume 12, page 312.
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