Our father among the saints Theodoros the Great Ascetic (also known as Theodore of Edessa) was a monk of the monastery of St. Savvas near Jerusalem who became bishop of Edessa in Syria. His feast day is celebrated on July 9 or July 19. His Life was written by Basil of Emesa. The work A Century of Spiritual Texts is included in the Philokalia and is believed to have been written by St. Theodoros.