Archimandrite Gregorios Hatziemmanouil was born on the Greek island of Mytilene and read theology at the University of Athens, with postgraduate studies in patristic theology at the University of Strasbourg. He was tonsured a monk at the Monastery of St John the Theologian in Mytilene in 1966 and shortly afterwards was ordained into the priesthood. In the same year he joined the monastic community of Mount Athos and is presently the Elder of the small brotherhood of the Cell of St John the Theologian, Koutloumousiou Monastery.
He has been a spiritual father and confessor since 1971 in which capacity he periodically travels throughout Greece and to Germany.
In addition to The Divine Liturgy his other full length studies and commentaries (in Greek) include Holy Baptism, Holy Confession, Holy Thanksgiving and Holy Communion, Church and Church Attendance, and St John the Evangelist, and he has also published numerous articles and monographs..