Gregory was born in Cappadocia. He pursued advanced studies in Athens at the same time as St. Basil with whom he always remained on terms of devoted friendship. St. Gregory, at first Bishop of Nazianzus and then of Constantinople, occupied the imperial see at a very troubled period. He resigned his office for the sake of peace. On his return to Nazianzus he devoted his whole time to the composition of theological works. So felicitously did he express the theology of the Three Divine Persons that the Greeks call him “the Theologian.” He died about the year 389. He is one of the Doctors of the Church.