The Shema (Deut 6:4-5) is the lens through which Lori A. Baron explores Johannine Christology and the fraught relationship between John's Gospel and Judaism. She begins by examining the use of the Shema in the Hebrew Bible and Second Temple literature, where it is frequently evoked in scenes of covenant renewal; to support adherence to Jewish law; and in prophetic oracles of restoration. The Shema functions similarly in John's Gospel, where Jesus' unity with God is expressed in terms of the "oneness" of the Shema (e.g., 10:30; 17:21-23): Jesus is within the divine unity. While the Synoptic...