Andrew Louth is professor emeritus of patristic and Byzantine studies at Durham University, England, and visiting professor of Eastern Orthodox theology at the Amsterdam Centre of Eastern Orthodox Theology (ACEOT), in the Faculty of Theology, the Free University, Amsterdam. He is also a priest of the Russian Orthodox Diocese of Sourozh (Moscow Patriarchate), serving the parish in Durham. His recent publications include Introducing Eastern Orthodox Theology, Greek East and Latin West: The Church AD 681-1071, Maximus the Confessor, and The Origins of the Christian Mystical Tradition. Matthew Levering (PhD, Boston College) is Perry Family Foundation Professor of Theology at Mundelein Seminary, University of Saint Mary of the Lake, in Mundelein, Illinois. He previously taught at the University of Dayton. Levering is the author of numerous books, including Engaging the Doctrine of Revelation, The Proofs of God, The Theology of Augustine, and Ezra & Nehemiah in the Brazos Theological Commentary on the Bible, and is the coauthor of Holy People, Holy Land. He serves as coeditor of the journals Nova et Vetera and the International Journal of Systematic Theology and has served as Chair of the Board of the Academy of Catholic Theology since 2007. Michael Horton (PhD) is Professor of Systematic Theology and Apologetics at Westminster Seminary in California. Author of many books, including The Christian Faith: A Systematic Theology for Pilgrims on the Way, he also hosts the White Horse Inn radio program. He lives with his wife, Lisa, and four children in Escondido, California. Fred Sanders (PhD, Graduate Theological Union) is professor of theology in the Torrey Honors Institute at Biola University in La Mirada, California. He is author of numerous books including The Triune God in the New Studies in Dogmatics series; The Deep Things of God: How the Trinity Changes Everything; and Dr. Doctrines' Christian Comix. He is coeditor of Jesus in Trinitarian Perspective: An Introductory Christology and Retrieving Eternal Generation. Fred is a core participant in the Theological Engagement with California's Culture Project and a popular blogger at The Scriptorium Daily. Tom Greggs is Chair in Historical and Doctrinal Theology at the University of Aberdeen, having previously been Professor of Systematic Theology at the University of Chester. His publications include Theology against Religion (T&T Clark); Barth, Origen, and Universal Salvation (OUP); New Perspectives for Evangelical Theology (Routledge); and The Vocation of Theology Today (Cascade). Tom sits on the Faith and Order Commission of the World Council of Churches, and also holds the position of Honorary Professor of Theology at St Mellitus College, London. Adam J. Johnson is an assistant professor of theology in the Torrey Honors Institute at Biola University. He focuses on the doctrine of the atonement, exploring the many ways in which the death and resurrection of Jesus Christ effect the reconciliation of all things to God. In addition to biblical, theological and historical studies of this doctrine, he enjoys exploring the contribution of literature and other fields to this topic. He is the author of God's Being in Reconciliation and Atonement: A Guide for the Perplexed, and editor of the forthcoming T&T Clark Companion to the Atonement, all with T&T Clark. Stanley N. Gundry is executive vice president and editor-in-chief for the Zondervan Corporation. He has been an influential figure in the Evangelical Theological Society, serving as president of ETS and on its executive committee, and is adjunct professor of Historical Theology at Grand Rapids Theological Seminary. He is the author of seven books and has written many articles appearing in popular and academic periodicals.