<Li> Fast of Nineveh </Li> <Tr> <Td> Major figures (show) <Ul> <Li> Abgar V </Li> <Li> Nine Saints of Ethiopia </Li> <Li> Gregory the Illuminator </Li> <Li> Tiridates III </Li> <Li> Mar Awgin </Li> <Li> Athanasius of Alexandria </Li> <Li> Ezana of Axum </Li> <Li> Frumentius </Li> <Li> Shenoute </Li> <Li> Mesrop Mashtots </Li> <Li> Cyril of Alexandria </Li> <Li> Dioscorus of Alexandria </Li> <Li> Severus of Antioch </Li> <Li> Abraham of Farshut </Li> <Li> Yared </Li> <Li> Simon the Tanner </Li> <Li> Gregory of Narek </Li> <Li> Nerses IV </Li> <Li> Michael the Syrian </Li> <Li> Bar Hebraeus </Li> <Li> Tekle Haymanot </Li> <Li> Giyorgis of Segla </Li> <Li> Mar Thoma I </Li> <Li> Gregorios Abdal Jaleel </Li> <Li> Geevarghese Gregorios </Li> <Li> Geevarghese Dionysius </Li> </Ul> </Td> </Tr> <Ul> <Li> Abgar V </Li> <Li> Nine Saints of Ethiopia </Li> <Li> Gregory the Illuminator </Li> <Li> Tiridates III </Li> <Li> Mar Awgin </Li> <Li> Athanasius of Alexandria </Li> <Li> Ezana of Axum </Li> <Li> Frumentius </Li> <Li> Shenoute </Li> <Li> Mesrop Mashtots </Li> <Li> Cyril of Alexandria </Li> <Li> Dioscorus of Alexandria </Li> <Li> Severus of Antioch </Li> <Li> Abraham of Farshut </Li> <Li> Yared </Li> <Li> Simon the Tanner </Li> <Li> Gregory of Narek </Li> <Li> Nerses IV </Li> <Li> Michael the Syrian </Li> <Li> Bar Hebraeus </Li> <Li> Tekle Haymanot </Li> <Li> Giyorgis of Segla </Li> <Li> Mar Thoma I </Li> <Li> Gregorios Abdal Jaleel </Li> <Li> Geevarghese Gregorios </Li> <Li> Geevarghese Dionysius </Li> </Ul> <Li> Nine Saints of Ethiopia </Li>

The major doctrinal development in the council of nicea in 325 was