To the pen of St. Basil the Great belong commentaries on Sacred Scripture, a treatise on the Holy Spirit, epistles, sermons and rules for monastic life. He did much for the establishment of the order of the Liturgy, and wrote numerous prayers. The Church reveres him as a fighter for the purity of the faith, a great hierarch and theologian, calling him a “universal teacher.” Only on two other saints – John Chrysostom and Gregory