Strictly speaking, the Orthodox Church does not celebrate doctrines, it celebrates events. On this homily given on the Sunday before Theophany, Fr Pat considers the event of Jesus's Incarnation.
These sermons are from All Saints Antiochian Church in Chicago, IL, preached by Fr. Patrick Reardon. If you enjoy these homilies, you might also be interested in reading Fr. Pat’s Daily Reflections on Holy Scripture.