From March 1974 until his enthronement as Ecumenical Patriarch, he was a member of the Holy Synod as well as of many Synodical Committees.
Dari Maret 1974 sampai pengangkatannya sebagai Patriarkh Ekumenikal, ia menjadi anggota Sinode Suci serta beberapa Komite-Komite Sinode.