Law & Gospel,
Letter & Spirit
Martin Luther
Paul, in terming the Gospel a "ministration of the spirit" would call attention to its power to produce in the hearts of men an effect wholly different from that of the Law: it is accompanied by the Holy Spirit and it creates a new heart. Man, driven into fear and anxiety by the preaching of the Law, hears this Gospel message, which, instead of reminding him of God's demands, tells him what God has done for him. It points not to man's works, but to the works of Christ, and bids him confidently believe that for the sake of his Son God will forgive his sins and accept him as his child. And this message, when received in faith, immediately cheers and comforts the heart....
The heart will no longer flee from God; rather it turns to him. Finding grace with God and experiencing his mercy, the heart feels drawn to him. It commences to call upon him and to treat and revere him as its beloved God. In proportion as such faith and solace grow, also love for the commandments will grow and obedience to them will be man's delight. Therefore, God would have his Gospel message urged unceasingly as the means of awakening man's heart to discern his state and recall the great grace and lovingkindness of God, with the result that the power of the Holy Spirit is increased constantly. Note, no influence of the Law, no work of man is present here. The force is a new and heavenly one--the power of the Holy Spirit. He impresses upon the heart Christ and his works, making of it a true book which does not consist in the tracery of mere letters and words, but in true life and action....
God promised of old, in Joel 2:28 and other passages, to give the Spirit through the new message, the Gospel. And he has verified his promise by public manifestations in connection with the preaching of that Gospel, as on the day of Pentecost and again later. When the apostles, Peter and others, began to preach, the Holy Spirit descended visibly from heaven upon their hearts. Acts 8:17; 10:44. Up to that time, throughout the period the Law was preached, no one had heard or seen such manifestation. The fact could not but be grasped that this was a vastly different message from that of the Law when such mighty results followed in its train. And yet its substance was no more than what Paul declared (Acts 13:38-39): "Through this man is proclaimed unto you remission of sins: and by him every one that believeth is justified from all things, from which ye could not be justified by the law of Moses...."
In this teaching you see no more the empty letters, the valueless husks or shells of the Law, which unceasingly enjoins., "This thou shalt do and observe," and ever in vain. You see instead the true kernel and power which confers Christ and the fullness of His Spirit. In consequence, men heartily believe the message of the Gospel and enjoy itsriches. They are accounted as having fulfilled the Ten Commandments. John says (Jn 1:16-17): "Of his fullness we all received, and grace for grace. For the Law was given through Moses; grace and truth came through Jesus Christ." John's thought is: The Law has indeed been given by Moses, but what avails that fact? To be sure, it is a noble doctrine and portrays a beautiful and instructive picture of man's duty to God and all mankind; it is really excellent as to the letter. Yet it remains empty; it does not enter into the heart. Therefore it is called "law," nor can it become aught else, so long as nothing more is given....