Andrei A. Orlov, Ph.D. (1990) in Sociology, Russian Academy of Sciences, and Ph.D. (2003) in Theology, Marquette University, is a Professor of Judaism and Christianity in Antiquity at Marquette University (Milwaukee, USA). He has published extensively on early Jewish and Christian apocalyptic and mystical traditions including The Enoch-Metatron Tradition (Texts and Studies in Ancient Judaism, 107; Tübingen: Mohr Siebeck, 2005), From Apocalypticism to Merkabah Mysticism (Supplements to the Journal for the Study of Judaism, 114; Leiden: Brill, 2007), Divine Manifestations in the Slavonic Pseudepigrapha (Orientalia Judaica Christiana, 2; Piscataway: Gorgias Press, 2009), Selected Studies in the Slavonic Pseudepigrapha (Studia in Veteris Testamenti Pseudepigrapha, 23; Leiden: Brill, 2009), Concealed Writings: Jewish Mysticism in the Slavonic Pseudepigrapha) (Flaviana; Moscow: Gesharim, 2011), and Dark Mirrors: Azazel and Satanael in Early Jewish Demonology (New York: SUNY, 2011). He has also co-edited several scholarly collections devoted to Eastern Christian liturgical and mystical traditions including L'Église des deux Alliances. Mémorial Annie Jaubert (1912--1980) (Orientalia Judaica Christiana, 1; eds. B. Lourié, A. Orlov, M. Petit; Piscataway: Gorgias Press, 2008), The Theophaneia School: Jewish Roots of Eastern Christian Mysticism (2nd ed.; eds. B. Lourié and A. Orlov; Piscataway: Gorgias Press, 2009), Symbola Caelestis. Le symbolisme liturgique et paraliturgique dans le monde Chrétien (eds. B. Lourié and A. Orlov; Piscataway: Gorgias Press, 2009), Ars Christiana. In Memoriam of Michail E. Murianov, Parts I and II (eds. R. Krivko, B. Lourié, A. Orlov; Scrinium 8-9; Piscataway: Gorgias Press, 2012), and New Perspectives on 2 Enoch: No Longer Slavonic Only (eds. A. Orlov, G. Boccaccini, J. Zurawski; Studia Judaeoslavica, 4; Leiden: Brill, 2012).