Robin M. Jensen is the Patrick O'Brien Professor of Theology at the University of Notre Dame, USA, and a member of the faculty of Medieval Institute and the Department of Art, Art History, and Design. Her published work explores the intersection of early Christian iconography, ecclesial architecture, ritual practices, and theological discourse.

Mark D. Ellison is an associate professor in the Department of Ancient Scripture at Brigham Young University, USA. He received a Ph.D. and M.A. from Vanderbilt University, USA, in Early Christianity and Early Christian Art, and an M.A. from the University of South Florida, USA, in Religious Studies (Biblical Archaeology).