Eminent medievalist Michael D. Bailey, Professor of History at Iowa State University in Ames, Iowa, talks about his upcoming book, Origin of the Witches’ Sabbath. The book contains nimble and enjoyable translations of five medieval treatises as well as the two witchcraft trials, as well as a critical introduction.

While the perception of magic as harmful is age-old, the notion of witches gathering together in large numbers, overtly worshiping demons, and receiving instruction in how to work harmful magic as part of a conspiratorial plot against Christian society was an innovation of the early fifteenth century. The sources collected in this book reveal this concept in its formative stages.

The idea that witches were members of organized heretical sects or part of a vast diabolical conspiracy crystalized most clearly in a handful of texts written in the 1430s and clustered geographically around the arc of the western Alps. Michael D. Bailey presents accessible English translations of the five oldest surviving texts describing the witches’ sabbath and of two witch trials from the period. These sources, some of which were previously unavailable in English or available only in incomplete or out-of-date translations, show how perceptions of witchcraft shifted from a general belief in harmful magic practiced by individuals to a conspiratorial and organized threat that led to the witch hunts that shook northern Europe and went on to influence conceptions of diabolical witchcraft for centuries to come.

Origins of the Witches’ Sabbath makes freshly available a profoundly important group of texts that are key to understanding the cultural context of this dark chapter in Europe’s history. It will be especially valuable to those studying the history of witchcraft, medieval and early modern legal history, religion and theology, magic, and esotericism.

Jana Byars is the Academic Director of Netherlands: International Perspectives on Sexuality and Gender.

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