All Religion Is Inter-Religion analyses the ways inter-religious relations have contributed both historically and philosophically to the constructions of the category of "religion" as a distinct subject of study. Regarded as contemporary classics, Steven M. Wasserstrom's Religion after Religion (1999) and Between Muslim and Jew (1995) provided a theoretical reorientation for the study of religion away from hierophanies and ultimacy, and toward lived history and deep pluralism. This book distills and systematizes this reorientation into nine theses on the study of religion. Drawing on these theses--and Wasserstrom's opus more generally--a distinguished group of his colleagues and former students demonstrate that religions can, and must, be understood through encounters in real time and space, through the complex relations they create and maintain between people, and between people and their pasts. The book also features an afterword by Wasserstrom himself, which poses nine riddles to students of religion based on his personal experiences working on religion at the turn of the twenty-first century.

"Gnosticism" has become a problematic category in the study of early Christianity. It obscures diversity, invites essentialist generalisations, and is a legacy of ancient heresiology. However, simply to conclude with "diversity" is unsatisfying, and new efforts to discern coherence and to synthesise need to be made. The present work seeks to make a fresh start by concentrating on Irenaeus' report on a specific group called the "Gnostics" and on his claim that Valentinus and his followers were inspired by their ideas. Following this lead, an attempt is made to trace the continuity of ideas from this group to Valentinianism. The study concludes that there is more continuity than has previously been recognised. Irenaeus' "Gnostics" emerge as the predecessors not only of Valentinianism, but also of Sethianism. They represent an early, philosophically inspired form of Christ religion that arose independently of the New Testament canon. Christology is essential and provides the basis for the myth of Sophia. The book is relevant for all students of Christian origins and the early history of the Church.