Constantine's letter to the churches on the observance of Easter, preserved in Eusebius of Caesarea's Life of Constantine, is the principal surviving witness to what the Council of Nicaea in 325 actually decided: uniform observance and independence from the Jewish lunar calendar, with no computational formula specified. Its strength is that it transmits the emperor's own words on a decision he presided over. Its limit is that Eusebius was Constantine's own biographer, no neutral observer, and no publisher, year or url is given here because the letter survives only within an ancient manuscript tradition rather than as a standalone dated publication.
Facts
Assessment
Reliability Tier1
Constantine's letter to the churches on the observance of Easter, preserved in Eusebius of Caesarea's Life of Constantine, the top tier reflecting that it transmits the emperor's own words on a decision he presided over at the Council of Nicaea, the principal surviving witness to what was actually decided, notwithstanding that Eusebius was Constantine's own biographer and no neutral observer, and that no publisher, year or url is given because the letter survives only within an ancient manuscript tradition. NotesThe principal witness to what the Council of Nicaea in 325 actually determined about Easter: uniformity of observance and independence from the Jewish reckoning, with no computational rule.
Citation
AuthorEusebius of Caesarea
Source Typeprimary-text
Cross-Tradition Connections
Associated With
Nicaea, Cities This source names Nicaea directly: "witness to what the Council of Nicaea in 325 actually decided: uniform observance and independence from the Jewish lunar calendar, with no computational formula specified."
Claims Backed By This Source (11 claims)
This source backs 11 claims across the atlas. As facts: 7 well-attested. As cited relationships: 1 holds. Plus 3 entities citing it as a general reference with no single fact or relationship attached.
Disposition By Topic
- Sources, 6 claims: 5 well-attested, 1 holds.
- Calendars, 3 claims: 2 well-attested, 1 general references.
- Historical Figures, 1 claims: 1 general references.
- Holidays & Festivals, 1 claims: 1 general references.
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