The Book of Acts records that, on the Day of Pentecost, the Apostles were gathered and received the fire of the Holy Spirit. From that time their commission was to spread Christianity through the world with the promise that the gates of hell would not prevail against the Church.
Elder Porphyrios (+Monk Moses of the Holy Skete of St. Panteleimon, of Mt. Athos, writer) – ΑΓΙΟΣ ΠΟΡΦΥΡΙΟΣ ΚΑΥΣΟΚΑΛΥΒΙΤΗΣ
† Monk Moses of the Holy Mountain, talks about Saint Porphyrios the Kavsokalyvite