the term became alienated from the much wider meaning that early Christians had attached to it. Still, the narrowed term projected back to the earlier period "A systematically reflected and highly differentiated understanding of charisma was often unconsciously infused into the Scriptures and writings of the church fathers, so that these texts were no longer read through the eyes of the authors". These dialectic meanings influenced notable changes in Pentecostalism in the late 19th century, and charismatic movements in some mainline churches in the mid-20th century. The discussion in the 21st Century Religion section explores what charisma means in these and other religious groups. Personality charisma The basis for modern secular usage comes from German sociologist Max Weber. He discovered the term in the work of Rudolph Sohm, a German church historian whose 1892 Kirchenrecht was immediately recognized in Germany as an epoch-making work. It also stimulated a debate between Sohm and leading theologians and religion scholars, which lasted more than twenty years and stimulated a rich polemical literature. The debate and literature had made charisma a popular term when Weber used it in The Protestant Ethic and the Spirit of Capitalism and in his Sociology of Religion. Perhaps because he assumed that readers already understood the idea, Weber's early writings lacked definition or explanation of the concept. In the collection of his works, Economy and Society edited by his wife, he identified the term as a prime example of action he labeled "value-rational," in distinction from and opposition to action he labeled "Instrumentally rational." Because he applied meanings for charisma similar to Sohm, who had affirmed the purely charismatic nature of early Christianity, Weber's charisma would have coincided with the divinely conferred charisma sense defined above in Sohm's work. Weber introduced the personality charisma sense when he applied charisma to designate a form of authority. To explain charismatic authority he developed his classic definition:Charisma is a certain quality of an individual personality by virtue of which he is set apart from ordinary men and treated as endowed with supernatural, superhuman, or at least specifically exceptional powers or qualities. These as such are not accessible to the ordinary person, but are regarded as of divine origin or as exemplary, and on the basis of them the individual concerned is treated as a leader. Here Weber extends the concept of charisma beyond supernatural to superhuman and even to exceptional powers and