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| First Council of Nicaea | |
|---|---|
 The Council of Nicaea, with Arius depicted as defeated by the council, lying under the feet of Emperor Constantine. The Hagia Sophia is in the background of the icon. | |
| Date | May to August 325 |
| Accepted by | |
Next council | First Council of Constantinople |
| Convoked by | Emperor Constantine I |
| President | Hosius of Corduba |
| Attendance |
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| Topics | Arianism, the nature of Christ, celebration of Passover, ordination of eunuchs, prohibition of kneeling on Sundays and from Easter to Pentecost, validity of baptism by heretics, lapsed Christians, sundry other matters[2] |
Documents and statements | Original Nicene Creed,[3] 20 canons,[4] and a synodal epistle[2] |
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The First Council of Nicaea (/naɪˈsiːə/ ny-SEE-ə; Ancient Greek: Σύνοδος τῆς Νίκαιας, romanized: Sýnodos tês Níkaias) was a council of Christian bishops convened in the Bithynian city of Nicaea (now İznik, Turkey) by the Roman Emperor Constantine I. The Council of Nicaea met from May until the end of July 325.[5]
This ecumenical council was the first of many efforts to attain consensus in the church through an assembly representing all Christendom. Hosius of Corduba may have presided over its deliberations.[6][7] Its main accomplishments were settlement of the Christological issue of the divine nature of God the Son and his relationship to God the Father,[3] the construction of the first part of the Nicene Creed, mandating uniform observance of the date of Easter,[8] and promulgation of early canon law.[4][9] Primary sources are collected in Fontes Nicaenae Synodi.[10]
- ^ Olson, Roger E. (1 April 1999). The Story of Christian Theology: Twenty Centuries of Tradition Reform. InterVarsity Press. p. 158. ISBN 978-0-8308-1505-0.
- ^ a b SEC, pp. 112–114
- ^ a b SEC, p. 39
- ^ a b SEC, pp. 44–94
- ^ Hanson 1988, p. 152.
- ^ Carroll 1987, p. 11
- ^ Vallaud 1995, pp. 234–235, 678.
- ^ On the Keeping of Easter
- ^ Leclercq 1911b
- ^ Fernández, Samuel (2024). Fontes Nicaenae Synodi: The Contemporary Sources for the Study of the Council of Nicaea (304–337). Paderborn: Brill. ISBN 978-3-657-79640-3.
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