Feastday: January 11
Abbot and founder. Born at Garissus, Cappadocia (modern Turkey), in 423, he undertook a pilgrimage to Jerusalem, and after meeting with the famed St. Simeon Stylites, he entered a monastery. Later, he was named the head of a church between Jerusalem and Bethlehem, but departed to live as a hermit near the Dead Sea. As he attracted a large number of followers, Theodosius established a monastery which was divided among the various nationalities of the monks (Greek, Armenian, etc.), each with their own church. Appointed by the patriarch of Jerusalem to the post of visitor to all the cenobitical communities of Palestine, he used his influence as cenobiarch to oppose the spread of the heretical doctrines of Eutychianism, displaying such zeal in his preaching that Emperor Anastasius I (r. 491-518), who was sympathetic to the Eutychians, exiled him. Recalled by Emperor Justin soon after Anastasius' death, Theodosius spent his last years in poor health.