At the heart of the Orthodox Church life is the Liturgy, and, from earliest times, Christian devotees gathered together to pray, to proclaim the Scriptures, and to celebrate the Lord's Supper. Although we can say that the Orthodox liturgy was practically completed by the time of the Barberini Codex, which appeared by the end of the eighth or beginning of the ninth century, according to Wybrew, the full term of its development and the process of consolidation...