Council of Nicaea (AD 325)
Key Facts:
Date | 20 May-25 July 325 |
Location | Nicaea |
Number of Participants | 250-300 |
Summoned by | Constantine |
Chaired by | Hosius of Corduba |
Key Participants | Hosius of Corduba, Eusebius of Caesarea, Eusebius of Nicomedia, Alexander of Alexandria, Arius |
Key Issues | Arianism, Melitians, and the date of Easter |
Key Events | Most of the bishops subscribed to the Nicene Creed, while those who refused were exiled. The Council also resolved the issue of when to celebrate Easter and drew up twenty canons on various aspects of church order. |
Ancient Descriptions | Anonymous, HE 2.5-11, 25-35; Athanasius, de Decretis, de Synodis, ad Afros; Eusebius VC3.4-24; Gelasius, HE, F11-F13; Jerome Dial. con. Luciferanus 20(18), 183; Philostorgius, HE 1.7-10; Rufinus, HE 10.3ff; Socrates, HE 1.8-13; Sozomen, HE 1.17-24; Theodoret, HE 1.7.1-9, 18; |
Ancient Descriptions of the Council of Nicaea
We have arranged the accounts of the Council of Nicaea by ten ancient historians (Athanasius, Eusebius, Gelasius, Jerome, Philostorgius, Rufinus, Socrates, Sozomen, Theodoret, and the Anonymous Church History) into seven tables, displaying the parallel accounts side-by-side. These tables are available in English and in the original Greek and Latin. We also have downloadable PDFs for each of the ten sources with the Greek/Latin and English in parallel columns. Access all these documents via the link above. The documents produced at Nicaea are included in these tables but can also be accessed below.
Surviving Documents:
Several of these documents are posted below only in English. To access the Greek text side-by-side with the English, see the linked PDFs for each document, or see our Ancient Descriptions tables. Only Constantine’s summons to the Council is not available in PDF format or in the tables, since it survives only in Syriac.
Constantine’s Summons to the Council
Eusebius’ Letter to his Congregation
Canons (Greek/Latin/English PDF)
The Council’s Letter to the Church in Egypt
Constantine’s Letter to the Church of Alexandria
Constantine’s Letter concerning the Date of Easter
Bibliography:
Hanson, R.P.C. The Search for the Christian Doctrine of God (New York: T&T Clark, 1988) pp. 152-163.
Kannengiesser, C. “Nicaea” in The Encyclopedia of the Early Church (New York: Oxford University Press, 1992).
Created by JCB and PSAM
Last updated 11-09-2023 by AGC
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