Book excerpt: The Gospel according to John presents Jesus in a unique way as compared with other New Testament writings. Scholars have long puzzled and pondered over why this should be. In this book, James McGrath offers a convincing explanation of how and why the author of the Fourth Gospel arrived at a christological portrait of Jesus that is so different from that of other New Testament authors, and yet at the same time clearly has its roots in earlier tradition. McGrath suggests that as the author of this Gospel sought to defend his beliefs about Jesus against the objections brought by opponents, he developed and drew out further implications from the beliefs he inherited. The book studies this process using insights from the field of sociology which helps to bring methodological clarity to the important issue of the development of Johannine Christology.