Book excerpt: Here in one volume are two of Birger Gerhardsson's much-debated works on the transmission of tradition in Rabbinic Judaism and early Christianity. In Memory and Manuscript (1961), Gerhardsson explores the way in which Jewish rabbis during the first Christian centuries preserved and passed on their sacred tradition, and he shows how early Christianity is better understood in light of how that tradition developed in Rabbinic Judaism. In Tradition and Transmission in Early Christianity (1964), Gerhardsson further clarifies the discussion and answers criticism of his earlier book. This Biblical Resource Series combined edition corrects and expands Gerhardsson's original works and includes a new preface by the author and a lengthy new foreword by Jacob Neusner that summarizes the works' importance and subsequent influence.