Book excerpt: Focused studies on the historical interactions and formations of Judaism and Christianity This volume of essays, from an internationally renowned group of scholars, challenges popular ways of understanding how Judaism and Christianity came to be separate religions in antiquity. Essays in the volume reject the belief that there was one parting at an early point in time and contest the argument that there was no parting until a very late date. The resulting volume presents a complex account of the numerous ways partings occurred across the ancient Mediterranean spanning the first four centuries CE. Features: Case studies that explore how Jews and Christians engaged in interaction, conflict, and collaboration Examinations of the gospels, Paul’s letters, the book of James, as well as rabbinic and noncanonical Christian texts New evidence for historical reconstructions of how Christianity came on the world scene