Address to the Christian Nobility of the German Nation is one of the tracts written by Martin Luther in 1520. In this work, he defined for the first time the signature doctrines of the priesthood of all believers and the two kingdoms. After the church made a strong attempt at drawing distinct lines on saying who had authority in the spiritual sphere and its matters. This division of Christians into spheres motivated Luther to write on the "three walls" the "Romanists" created to protect themselves from reform: "Spiritual Power over Temporal" – The first wall of the "Romanists" that Luther criticized was that of the division of the spiritual and temporal state. "Authority to Interpret Scripture" – In the second part of the letter to the Christian nobility of the German nation, Luther debates the point that it is the Pope's sole authority to interpret, or confirm interpretation of, scriptures "Authority to Call a Council" – The final part to Luther's letter is the largest demonstration of his desire to see authority in control over the spiritual sphere shift to the temporal sphere.

Address to the Christian Nobility of the German Nation is one of the tracts written by Martin Luther in 1520. In this work, he defined for the first time the signature doctrines of the priesthood of all believers and the two kingdoms. After the church made a strong attempt at drawing distinct lines on saying who had authority in the spiritual sphere and its matters. This division of Christians into spheres motivated Luther to write on the "three walls" the "Romanists" created to protect themselves from reform: "Spiritual Power over Temporal" - The first wall of the "Romanists" that Luther criticized was that of the division of the spiritual and temporal state. "Authority to Interpret Scripture" - In the second part of the letter to the Christian nobility of the German nation, Luther debates the point that it is the Pope's sole authority to interpret, or confirm interpretation of, scriptures "Authority to Call a Council" - The final part to Luther's letter is the largest demonstration of his desire to see authority in control over the spiritual sphere shift to the temporal sphere.

Martin Luther posted his Ninety-five Theses on the church door at Wittenberg in 1517. In the three years that followed, Luther clarified and defended his position in numerous writings. Chief among these are the three treatises written in 1520. In these writings Luther tried to frame his ideas in terms that would be comprehensible not only to the clergy but to people from a wide range of backgrounds. To the Christian Nobility of the German Nation is an attack on the corruption of the church and the abuses of its authority, bringing to light many of the underlying reasons for the Reformation. The second treatise, The Babylonian Captivity of the Church, contains Luther's sharp criticism of the sacramental system of the Catholic church. The Freedom of a Christian gives a concise presentation of Luther's position on the doctrine of justification by faith. The translations of these treatises are all taken from the American edition of Luther's Works. This new edition of Three Treatises will continue to be a popular resource for individual study, church school classes, and college and seminary courses.