He served for sixteen years as a pastor and teacher in Algeria, Egypt and the West Bank. His research focuses on the intersection of Islamic law and theology and on Muslim-Christian dialogue. He is the author of Earth, Empire and Sacred Text: Muslims and Christians as Trustees of Creation (London: Equinox, 2010, paperback in 2013). His forthcoming book is Justice and Love: A Muslim-Christian Conversation (Equinox, 2017). He blogs on his own website, www.humantrustees.org.