Graham H. Twelftree is Distinguished Professor of New Testament, Regent University, Virginia Beach. His previous publications include Jesus the Exorcist: A Contribution to the Study of the Historical Jesus (1993), Jesus the Miracle Worker: A Historical and Theological Study (1999), In the Name of Jesus: Exorcism Among Early Christians (2007) and People of the Spirit: Exploring Luke's View of the Church (2009). He is also on the editorial board of the Journal for the Study of the Historical Jesus.