*Roosien, Mark: * - REV. DR. MARK ROOSIEN is lecturer in liturgical studies at the Yale Institute of Sacred Music and Yale Divinity School and is an ordained deacon in the Orthodox Church in America. He has also translated Sergius Bulgakov, The Eucharistic Sacrifice (University of Notre Dame Press, ...

*Roosien, Mark: * - REV. DR. MARK ROOSIEN is lecturer in liturgical studies at the Yale Institute of Sacred Music and Yale Divinity School and is an ordained deacon in the Orthodox Church in America. He has also translated Sergius Bulgakov, The Eucharistic Sacrifice (University of Notre Dame Press, 2021).