Professor Oxford University Faculty of Theology

Margaret O'Brien Flatley Professor of Catholic Theology

Aquinas Chair in Theology and Philosophy, University of St. Thomas

Professor of Historical and Systematic Theology, University of Oxford

Stockholm School of Theology

Professor of Patristics and Church History, University of Salzburg

St Vladimir's Orthodox Theological Seminary

Research Fellow, Australian Catholic University

Professor of Theology, Baylor University

University of St. Thomas