First Council of Nicaea

First Council of Nicaea Year: 325 Outcome: The council denounced Arianism and issued the Nicene Creed, affirming the Son is of one substance (homoousios) with the Father. Recognized by: • Roman Catholic Church • Eastern Orthodox Churches • Oriental Orthodox Churches • Anglican Church • Lutheran Churches • Assyrian Church of the East Topics discussed: • Arianism • Baptism • Christology • Lapsi • Ordination • Paschal Controversies • Trinity Heresies addressed: Arianism Opponents: Arius Ruling popes: Pope Saint Sylvester I Ruling patriarchs: • Pope Saint Sylvester I • Alexander of Constantinople • Pope Alexander of Alexandria • Saint Eustathius • Macarius of Jerusalem Ruling emperors:Constantine the Great (Roman) Council conveners:Constantine the Great Council presidents: Hosius of Corduba Other key figures: • Arius • Athanasius of Alexandria • Caecilian • Eusebius • Eusebius of Nicomedia • Saint Jacob of Nisibis • Leontius of Caesarea • Saint Nicholas • Saint Paphnutius • Potamion of Heraclea • Protogenes of Serdica • Saint Spyridon Number in attendance: 318 Location: Nicaea Church council documents: • The First Ecumenical Council • Nicene Creed • Canons • Arabic Canons Later Attributed to the Council of Nice • Synod Letter • Letter to those Unable to Attend the Council[1] [1]Parks, J. (2022). Ecumenical Councils. Faithlife.