Father John Chryssavgis, the internationally renowned theologian who serves as Theological Advisor to His All-Holiness Ecumenical Patriarch Bartholomew, will offer the annual Washington Theological Consortium Lecture on Thursday, February 23, 2023, at Catholic University of America in Washington, D.C. Father John Chryssavgis, the internationally renowned theologian who serves as Theological Advisor to His All-Holiness Ecumenical Patriarch Bartholomew, will offer the annual Washington Theological.