Dr. Rangar Cline is a historian of the later Roman Empire and an Assistant Professor of Religious Studies at the University of Oklahoma. His research uses archaeological evidence and written sources to explore the relationship between early Christianity, traditional Greco-Roman religions, and early Judaism in the Roman and early Byzantine periods. His first book, Ancient Angels, examines conceptions of angels and the veneration of angels in Greco-Roman religions, early Christianity, and Roman-era Judaism between the third and fifth centuries CE. His current research examines the economics of pilgrimage in the later Roman Empire and the transition from extramural to intramural burial in late antiquity.