The Festal Epistles Of Saint Athanasius - Paperbackby Saint Athanasius (Author) The Festal Epistles of Saint Athanasius is a collection of letters written by Saint Athanasius, a prominent Christian theologian and bishop in the 4th century. The book contains 39 letters, each written to commemorate a specific religious festival or event in the Christian calendar. In these letters, Saint Athanasius discusses various theological and practical issues related to the Christian faith, including the nature of