Almost a hundred years after Albert Hauck's comprehensive overview, a new representation of medieval Christianity emerges from the pen of a Protestant church historian. The ecclesiastical events are contextualized within the broader development of Europe, with a particular focus on theology and piety. In his work, Volker Leppin traces the course of Christianity from the upheavals caused by migrations and ethnogenesis through the solidifications and differentiations of the High Middle Ages to the late Middle Ages, characterized by its diverse tensions and polarities. He provides extensive information about external events based on the latest interdisciplinary research. Thus, church history also serves as a cultural history of Christianity.