MaryStef Antrobus is a theologian and scholar of formation, Board Certified Chaplain, and Board Certified Pastoral Counselor whose work stands at the intersection of Orthodox Trinitarian theology, spiritual formation, human development, and pastoral care. A former United States Navy Hospital Corpsman, she earned degrees in Contemplative Psychology, Clinical Mental Health Counseling, and Art Therapy from Naropa University, as well as Master of Theological Studies and Master of Theology degrees from Holy Cross Greek Orthodox School of Theology.
She is currently completing doctoral work in Eastern Christian Studies at Pittsburgh Theological Seminary, in partnership with the Antiochian House of Studies, an internationally recognized program of Orthodox theological study.
Her research develops Katanyxis Theology as an Orthodox-rooted, ecumenically engaged field of doctrinal reception, exploring how confessed truth is perceived, discerned, received, and formed into prayer, authority, communion, and lived faith. Her scholarly work also includes A Catechism for Humanity, an ecumenical formation catechism for Trinitarian Christian communities seeking shared practices of prayer, formation, and communion across traditions.
As the 2026 HEI Fellow, Antrobus will contribute to the Institute’s growing work in theology, ecumenical engagement, formation, and pastoral reflection, bringing a distinctive interdisciplinary perspective shaped by ministry, scholarship, counseling, and spiritual care.