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Eusebius of Nicomedia


Eusebius of Nicomedia

Eusebius of Nicomedia (died 341) was the man who baptised Constantine the Great. He was a bishop of Berytus (modern-day Beirut) in Phoenicia, then of the See of Nicomedia, where the imperial court resided, and finally of Constantinople from 338 up to his death.


  • Influence in the Imperial family and the Imperial court 1
  • Relationship with Arius 2
  • Political and religious career 3
  • Death and aftermath 4
  • Notes 5
  • References 6
  • External links 7

Influence in the Imperial family and the Imperial court

Distantly related to the imperial family of Constantine, he owed his progression from a less significant Levantine bishopric to the most important episcopal see to his influence at court, and the great power he wielded in the Church was derived from that source. In fact, during his time in the Imperial court, the Eastern court and the major positions in the Eastern Church were held by Arians or Arian sympathizers.[1] With the exception of a short period of eclipse, he undeservedly enjoyed the confidence both of Constantine and Constantius II, although Constantine never subscribed to Eusebius' doctrinal tendencies. He also served as the tutor of the later Emperor Julian the Apostate; and it was he who baptized Constantine the Great on May 22, 337 owing to his familial relationship with the emperor.[2] Also during his time in the Imperial court, Arianism became more popular with the Royal family.[3] It can be logically surmised that Eusebius had a huge hand in the acceptance of Arianism in the Constantinian household. The Arian influence grew so strong during his tenure in the Imperial court that it wasn't until the end of the Constantinian dynasty and the appointment of Theodosius I that Arianism lost its influence in the Empire.[4]

It was of particular interest that Eusebius was nearly persecuted because of his close relationship to the Emperor Licinius while serving as Bishop of Nicomedia during Licinius' reign.

Relationship with Arius

Like Arian party.

At the First Council of Nicaea, 325, he signed the Confession, but only after a long and desperate opposition in which he "subscribe with hand only, not heart"[8] according to ancient sources. It was a huge blow to the Arian party since it was surmised that the participants in the First Council of Nicaea were evenly split between non-Arians and Arians.[9] His defense of Arius angered the emperor, and a few months after the council he was sent into exile due to his continual contacts with Arius and the exiles.[10] After the lapse of three years, he succeeded in regaining the imperial favor by convincing Constantine that Arius and his views do not conflict with the Nicene Creed.[11] After his return in 329 he brought the whole machinery of the state government into action in order to impose his views upon the Church.

Political and religious career

In complement to his theological interests, Eusebius was a skilled politician. Upon his return, he regained the lost ground resulted from the First Council of Nicaea, established alliances with other groups such as the Meletians and expelled many opponents.

He was described by modern historians as an "ambitious intriguer" [12] and a "consummate political player".[1] He was also described by ancient sources as a high-handed person who was also aggressive in his dealings.;[13] he also used his allies to spy on his opponents.

He was able to dislodge and exile three key opponents who espoused the First Council of Nicaea: Eustathius of Antioch in 330, Athanasius of Alexandria in 335 and Marcellus of Ancyra in 336. This was no small feat since Athanasius was regarded as a "man of God" by Constantine.[14] and both Eustathius and Athanasius held top positions in the church.

Another major feat was his appointment as the Patriarch of Constantinople by expelling Paul I of Constantinople; Paul would eventually return as Patriarch after Eusebius' death.

Even outside the empire, Eusebius had great influence. He brought Ulfilas into the Arian priesthood and sent the latter to convert the heathen Goths.

Eusebius baptised Constantine the Great in his villa in Nicomedia, on May 22, 337 just before the death of the Emperor.

Death and aftermath

He died at the height of his power in the year 341.[15]

He was so influential that even after his death, Constantius II heeded his and Eudoxus of Constantinople's advice to attempt to convert the Roman Empire to Arianism by creating Arian Councils and official Arian Doctrines.[16]

It was because of Eusebius that "On the whole, Constantine and his successors made life pretty miserable for Church leaders committed to the Nicene decision and its Trinitarian formula."[17]

Eusebius of Nicomedia is not to be confused with his contemporary Eusebius of Caesarea, the author of a well-known early book of Church History.

Orthodox Church titles
Preceded by
Paul I
Archbishop of Constantinople
Succeeded by
Paul I


  1. ^ a b Drake, "Constantine and the Bishops", pp.395.
  2. ^ "Eusebius of Nicomedia".  
  3. ^ Ellingsen, "Reclaiming Our Roots: An Inclusive Introduction to Church History, Vol. I, The Late First Century to the Eve of the Reformation", pp.121.
  4. ^ Young, "From Nicaea to Chalcedon", pp.92.
  5. ^ Jones, "Constantine and the Conversion of Europe", pp.121.
  6. ^ Young, "From Nicaea to Chalcedon", pp.59.
  7. ^ Young, "From Nicaea to Chalcedon", pp.61.
  8. ^ Amidon, "The Church History of Rufinus of Aquileia: Books 10 and 11", 10.5.
  9. ^ Lim, "Public Disputation, power, and social order in late antiquity", pp.183.
  10. ^ Drake, "Constantine and the Bishops", pp.259.
  11. ^ Roldanus, "The Church in the Age of Constantine: the Theological Challenges", pp.82.
  12. ^ Roldanus, "The Church in the Age of Constantine: The Theological Challenges", pp.78.
  13. ^ Amidon, "The Church History of Rufinus of Aquileia: Books 10 and 11", 10.12.
  14. ^ Roldanus, "The Church in the Age of Constantine: the Theological Challenges", pp.84.
  15. ^
  16. ^ Guitton, "Great Heresies and Church Councils", pp.86.
  17. ^ Ellingsen, "Reclaiming Our Roots: An Inclusive Introduction to Church History, Vol. I, The Late First Century to the Eve of the Reformation", pp.119.


  • Amidon, Philip R. (1997). The Church History of Rufinus of Aquileia: Books 10 and 11. New York: Oxford University Press. 
  • Bright, William (1970). The Age of the Fathers. New York: AMS Press. 
  • Chadwick, Henry (2003). The Church in Ancient Society: From Galilee to Gregory the Great. Oxford: Oxford University Press. 
  • Chadwick, Henry (1993). The Early Church. London: Penguin Group. 
  • Drake, H.A. (2000). Constantine and the Bishops: The Politics of intolerance. Baltimore: The Johns Hopkins University Press. 
  • Ellingsen, Mark (1999). Reclaiming Our Roots: An Inclusive Introduction to Church History, Vol. I, The Late First Century to the Eve of the Reformation. Pennsylvania: Trinity Press International. 
  • Guitton, Jean (1963). Great Heresies and Church councils. New York: Harper & Row Publishers. 
  • Jones, A.H.M. (1978). Constantine and the Conversion of Europe. Toronto: University of Toronto Press. 
  • Lim, Richard (1995). Public Disputation, power, and social order in late antiquity. Berkeley: University of California Press. 
  • Roldanus, Johannes (2006). The Church in the Age of Constantine: the Theological Challenges. Oxfordshire: Routledge. 
  • Young, Frances (1983). From Nicaea to Chalcedon. Philadelphia: Fortress Press. 

External links

Correspondence of Eusebius of Nicomedia:

  • Arius to Eusebius
  • Eusebius to Arius
  • Eusebius to Paulinus of Tyre
  • Eusebius to the Council of Nicaea
  • Constantine on Eusebius' deposition
  • Eusebius' confession of faith


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