Religious observances for September 12

September 12 marks several religious observances in the Orthodox and Greco-Catholic calendars, including the commemoration of the Nativity of the Mother of God and the feast of Saint Martyr Autonom.

Saint Autonom, a bishop who served in Italy during the reign of Emperor Diocletian, is honored for his missionary work. After fleeing persecution in Italy, he traveled to Bithynia, where he preached the Gospel and established a church dedicated to Saint Archangel Michael. He was eventually killed by non-believers in the sanctuary, though his relics are noted for remaining incorrupt.