 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, this was the letter "to the Christian Nobility of the German Nation"

Under these circumstances, complicated by the crisis then confronting the German nobles, Luther issued his "To the Christian Nobility of the German Nation" (Aug. 1520), committing to the laity, as spiritual priests, the reformation required by God but neglected by the pope and the clergy.This treatise, which has been called a "cry from the heart of the people" and a "blast on the war trumpet," was the first publication Luther produced after he was convinced that a break with Rome was both inevitable and unavoidable.