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5th century

Henotikon

Alexandria, Constantinople, Egypt and the eastern Roman Empire

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The Henotikon, or “Edict of Unity,” was a compromise issued in 482 by Emperor Zeno and Acacius, patriarch of Constantinople, to reconcile the Alexandrian and imperial churches after the conflicts surrounding Chalcedon. It affirmed the creeds of Nicaea, Constantinople, and Ephesus, accepted Cyril’s Twelve Anathemas, and condemned Nestorius and Eutyches while avoiding an explicit denunciation of Chalcedon.

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Ask Uriti

  • What unfolded during Henotikon?
  • What role does Henotikon play in the Alexandria region?
  • What is the link between Henotikon and Cyril’s Twelve Anathemas?
  • About Henotikon: can you clarify “Issued by Zeno and Acacius in 482”?

The Story

A compromise after Chalcedon

The Henotikon was issued on 28 July 482 in a letter addressed to Peter Mongus, Timothy’s successor in Alexandria, and to the bishops, monks, and laypeople of Alexandria, Egypt, and Cyrenaica. It sought to accommodate Alexandrian religious demands without directly repudiating the Council of Chalcedon. The measure emerged from the political necessity of accepting Alexandria’s influence as a force within the empire.

The edict defined orthodoxy through the creed of Nicaea, as confirmed at Constantinople and the first Council of Ephesus, while accepting Cyril’s Twelve Anathemas as canonical. It presented Christ as consubstantial with God and humanity and affirmed that he was one rather than two, while condemning both Nestorius and Eutyches. This formulation allowed opposing parties to interpret the settlement according to their own priorities.

Peter Mongus faced pressure from dissident monks who demanded the denunciation of Leo’s Tome and Chalcedon. Although he complied with those demands in order to retain his position, he remained in communion with Constantinople. The settlement therefore achieved a limited religious peace without eliminating the underlying ecclesiastical conflict.

The compromise also produced a wider rupture. Acacius’s restoration of communion with Peter Mongus provoked opposition from Rome, and Pope Felix III excommunicated the Constantinopolitan patriarch in 484. The resulting Acacian Schism divided Rome from Constantinople and the eastern patriarchates for thirty-five years.

Key Points

  • Issued by Zeno and Acacius in 482
  • Sought compromise without condemning Chalcedon
  • Accepted Cyril’s Twelve Anathemas
  • Condemned Nestorius and Eutyches
  • Contributed to the Acacian Schism

Trust

high

This level indicates the accuracy of the dates, locations, and boundaries available in the current corpus.

Source

The Cambridge History of Africa, Volume 2: From c.500 BC to AD 1050

A starting point for further exploration—not an exhaustive bibliography.

ResourcesMap
EventTrust high

5th century

Henotikon

Alexandria, Constantinople, Egypt and the eastern Roman Empire

Listen
Compare
View in the constellation

The Henotikon, or “Edict of Unity,” was a compromise issued in 482 by Emperor Zeno and Acacius, patriarch of Constantinople, to reconcile the Alexandrian and imperial churches after the conflicts surrounding Chalcedon. It affirmed the creeds of Nicaea, Constantinople, and Ephesus, accepted Cyril’s Twelve Anathemas, and condemned Nestorius and Eutyches while avoiding an explicit denunciation of Chalcedon.

Territory · Event

Continue exploring

Ask Uriti

  • What unfolded during Henotikon?
  • What role does Henotikon play in the Alexandria region?
  • What is the link between Henotikon and Cyril’s Twelve Anathemas?
  • About Henotikon: can you clarify “Issued by Zeno and Acacius in 482”?

The Story

A compromise after Chalcedon

The Henotikon was issued on 28 July 482 in a letter addressed to Peter Mongus, Timothy’s successor in Alexandria, and to the bishops, monks, and laypeople of Alexandria, Egypt, and Cyrenaica. It sought to accommodate Alexandrian religious demands without directly repudiating the Council of Chalcedon. The measure emerged from the political necessity of accepting Alexandria’s influence as a force within the empire.

The edict defined orthodoxy through the creed of Nicaea, as confirmed at Constantinople and the first Council of Ephesus, while accepting Cyril’s Twelve Anathemas as canonical. It presented Christ as consubstantial with God and humanity and affirmed that he was one rather than two, while condemning both Nestorius and Eutyches. This formulation allowed opposing parties to interpret the settlement according to their own priorities.

Peter Mongus faced pressure from dissident monks who demanded the denunciation of Leo’s Tome and Chalcedon. Although he complied with those demands in order to retain his position, he remained in communion with Constantinople. The settlement therefore achieved a limited religious peace without eliminating the underlying ecclesiastical conflict.

The compromise also produced a wider rupture. Acacius’s restoration of communion with Peter Mongus provoked opposition from Rome, and Pope Felix III excommunicated the Constantinopolitan patriarch in 484. The resulting Acacian Schism divided Rome from Constantinople and the eastern patriarchates for thirty-five years.

Key Points

  • Issued by Zeno and Acacius in 482
  • Sought compromise without condemning Chalcedon
  • Accepted Cyril’s Twelve Anathemas
  • Condemned Nestorius and Eutyches
  • Contributed to the Acacian Schism

Trust

high

This level indicates the accuracy of the dates, locations, and boundaries available in the current corpus.

Source

The Cambridge History of Africa, Volume 2: From c.500 BC to AD 1050

A starting point for further exploration—not an exhaustive bibliography.

Continue the journey

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