John A. O'Brien Professor of Theology
Primary Field of Study: History of Christianity
Secondary Field of Study: Christianity and Judaism in Antiquity
Ph.D. Boston College
Research and Training Interests
Theology of Salvation
Retrieving Nicaea: The Development and Meaning of Trinitarian Doctrine. Grand Rapids, MI: Baker Academic, 2011 & 2018.
Athanasius: the Coherence of his Thought. London & New York: Routledge, 1998 & 2004.
"Faith, Reason, and Incarnation in Irenaeus of Lyons," Nova et Vetera 16.2 (2018), 543-560
"Creatio ex nihilo in Athanasius of Alexandria’s Against the Greeks-On the Incarnation." In Creation ex Nihilo. Origins, Development, Contemporary Challenges. ed. Gary Anderson, 119-149. University of Notre Dame Press, 2017.
"The Witness of Athanasius at the (Hoped-For) Nicene Council of 2025." Pro Ecclesia. A Journal of Catholic and Evangelical Theology XXV:2 (2016) 220-236.
I was born in India, grew up in Egypt and Canada, and am a married priest in the Melkite Greek Catholic Church. I am interested in all aspects of the theology of the early Church, with special emphasis on the Trinitarian and Christological doctrines of the Greek fathers and Augustine; early Christian biblical exegesis; and the engagement between early Christian theological reflection and contemporary theological questions and concerns. I am also interested in modern Orthodox and Eastern Christian theology. I am presently completing a manuscript on soteriology, Deification Through the Cross. An Eastern Christian Theology of Salvation, and am also working on a book on the theological legacy of Irenaeus.