“Psalms and Prayer in Syriac Monasticism: Clues from Psalter Prefaces and their Greek Sources” for Prayer and Worship in Eastern Christianities, 5th to 11th Centuries, ed. Brouria Bitton-Ashkelony and Derek Krueger (London and New York: Routledge, 2017), pp.44-62.
“Evagrius Beyond Byzantium: the Latin and Syriac Receptions,” for Evagrius and His Legacy in Byzantium and the West, ed. Robin Darling Young and Joel Kalvesmaki (South Bend: Notre Dame University Press, 2016), pp.206-35.
“Patristics beyond ‘East’ and ‘West,’” for Patristic Studies in the Twenty-First Century, ed. Carol Harrison, Brouria Bitton-Ashkelony, Theodore de Bruyn (Turnhout: Brepols, 2015), pp.317-41.
“Re-thinking the History of Monasticism East and West: A Modest tour d’horizon,” for Prayer and Thought in Monastic Tradition. Essays in Honour of Benedicta Ward SLG, ed. Santha Bhattacharji, Rowan Williams, Dominic Mattos (London: Bloomsbury, 2014), pp.3-16.
“Benedictine Monasticism and Mysticism,” for Wiley-Blackwell Companion to ChristianMysticism, ed. Julia Lamm (Malden, MA/ Oxford: Wiley-Blackwell, 2013), pp.216-36.
International Conference on Patristic Studies: attended quadrennial conferences in Oxford in August 1987, 1991, 1995, 1999, 2003, 2007, 2011, 2015.
North American Patristics Society, 1994–; attended annual meetings in 1994, 1996, 1997, 1998, 2000, 2002, 2006, 2008, 2014, 2016.
Society for the Study of Christian Spirituality, 1996–.
Spiritus, a journal for critical essays on Christian spirituality (Johns Hopkins University Press), editorial advisory board member, 2000–.
Symposium Syriacum. Attended quadrennial meetings in 2004, 2008, 2012, 2016.
Society for Biblical Literature, 2006–. Attended annual meeting in 2006, 2008, 2009, 2011, 2012, 2013, 2014.
Oxford Dictionary of Late Antiquity.Area Editor for “Christian Religious Life.” International Joint Commission for Theological Dialogue between the Catholic Church and the Oriental Orthodox Churches, 2009–.
North American Oriental Orthodox-Catholic Dialogue, 2010–.