Brouria Bitton-Ashkelony is Martin Buber Professor in the Department of Comparative Religion at the Hebrew University of Jerusalem. She is the author of The Ladder of Prayer and the Ship of Stirrings (Peeters, 2019) and the co-editor of Origeniana Duodecima (Peeters, 2019).Miriam L. Hjälm, D.Phil (2015), is a Senior lecturer in Eastern Christian Studies at Sankt Ignatios College, University College Stockholm. She is the author of Christian Arabic Versions of Daniel (Brill, 2016) and the editor of Senses of Scripture, Treasures of Tradition (Brill, 2017).Robert A. Kitchen, D.Phil (1998), retired United Church of Canada minister. He has published studies and translations of Syriac ascetical texts, including The Book of Steps (Cistercian, 2004) and The Discourses of Philoxenos of Mabbug (Cistercian, 2013).