Your Cart

Your cart is empty.

Why Some Churches Rejected Chalcedon — and What Happened Next

Rev. C•D•F• Warrington, M.Div.
By Rev. C•D•F• Warrington, M.Div.

Ordained Minister, M.Div.

May 9, 2026

3 min read

chalcedonian creed
Churches that rejected the Council of Chalcedon illustrated in church history

The Council of Chalcedon in 451 AD was a watershed moment in Christian history — but not all churches accepted its conclusions. The rejection of Chalcedon by significant portions of Eastern Christianity created a schism that persists to this day, producing what scholars call the Oriental Orthodox churches.

Who Rejected Chalcedon?

The churches that rejected Chalcedon were primarily concentrated in Egypt (the Coptic Church), Ethiopia (the Ethiopian Orthodox Church), Syria (the Syriac Orthodox Church), Armenia (the Armenian Apostolic Church), and India (parts of the Thomas Christian tradition). These communities are today collectively known as Oriental Orthodox churches, distinguished from the Eastern Orthodox churches that did accept Chalcedon.

Why Did They Reject It?

The Oriental Orthodox churches followed the theological tradition associated with Cyril of Alexandria, who emphasized the unity of Christ's person in a way that used different vocabulary than Chalcedon. Their position is sometimes called Miaphysitism — the belief that Christ has one united divine-human nature, rather than two distinct natures. They insisted this was not the same as Eutychianism (which Chalcedon condemned) and that Chalcedon's 'two natures' language dangerously echoed the condemned Nestorianism.

Political and Theological Entanglement

The rejection was not purely theological. Egypt in particular resented imperial interference in church affairs, and many Egyptians viewed Chalcedon as a Greek council imposing foreign theology on their ancient church. When the Emperor enforced Chalcedonian bishops in Alexandria, it only deepened the breach. What began as a theological dispute quickly became a question of ecclesiastical and ethnic identity.

The Consequences: A Lasting Schism

The Chalcedonian schism produced parallel church structures across the Middle East and Africa that have endured for 1,500 years. Today the Oriental Orthodox churches represent tens of millions of Christians — the Coptic Church alone has 10-15 million members worldwide. These are ancient, deeply liturgical churches with unbroken apostolic succession, not splinter groups or modern denominations.

Modern Dialogue and Surprising Agreement

In the 20th century, ecumenical dialogue between Chalcedonian and non-Chalcedonian churches produced a surprising conclusion: both sides may have been confessing the same faith using different theological vocabularies. The 1990 Agreed Statement between the Eastern Orthodox and Oriental Orthodox churches acknowledged that 'both families have always loyally maintained the same authentic Orthodox Christological faith,' while using different formulae. Full reunion has not yet occurred, but the theological distance has narrowed dramatically.

What This Means for Chalcedon's Legacy

The story of Chalcedon's rejection reminds us that theological precision matters — but so does context, vocabulary, and the political pressures that shape how doctrines are received. The Chalcedonian Definition remains the Christological standard of the Roman Catholic, Eastern Orthodox, and Protestant churches. Understanding why others rejected it — and why modern scholarship sees more agreement than division — deepens our appreciation for the richness of the Christian tradition.

Tags:chalcedonian creedchurch historychristian unity

Frequently Asked Questions

Why did some churches reject the Council of Chalcedon in 451 AD?

The Council of Chalcedon (451 AD) defined that Jesus Christ has two complete natures—fully divine and fully human—united in one person without confusion, change, division, or separation. Several Eastern churches, including those in Egypt, Ethiopia, Syria, and Armenia, rejected this definition as too close to the Nestorian position that had been condemned at Ephesus in 431. They preferred the formula of Cyril of Alexandria, which spoke of 'one nature of the incarnate Word,' and became known as Miaphysite or Oriental Orthodox churches. Their rejection was as much political and cultural as theological, entangled with Egyptian resentment of Byzantine imperial control.

What churches are considered non-Chalcedonian today?

The Oriental Orthodox churches are the primary non-Chalcedonian Christian bodies still in existence: the Coptic Orthodox Church of Alexandria, the Ethiopian Orthodox Tewahedo Church, the Eritrean Orthodox Tewahedo Church, the Syriac Orthodox Church, the Armenian Apostolic Church, and the Malankara Orthodox Syrian Church of India. Together these churches number approximately 60 million members. They consider themselves fully orthodox but use different terminology than the Greek-speaking Byzantine tradition to describe Christ's nature, and modern ecumenical dialogue has significantly narrowed the perceived theological gap.

What happened to non-Chalcedonian churches after 451 AD?

After Chalcedon, non-Chalcedonian churches experienced increasing persecution from the Byzantine Empire, which enforced the Chalcedonian definition as imperial orthodoxy. The theological split became institutionalized with competing patriarchs in Alexandria and Antioch—one Chalcedonian (Melkite) and one non-Chalcedonian (Coptic/Syriac). Many of these communities found the Arab Islamic conquest of the seventh century preferable to Byzantine religious coercion, which some historians argue eased the spread of Islam in formerly Christian Egypt and Syria. Despite centuries of pressure, all the Oriental Orthodox churches have survived into the present.

Is the split between Chalcedonian and non-Chalcedonian churches over doctrine or politics?

Modern ecumenical scholarship, particularly the Agreed Statements between the Eastern Orthodox and Oriental Orthodox churches (1989–1990), has concluded that the historical divide was largely a matter of different theological vocabulary rather than irreconcilable doctrine. Both traditions intended to confess the full divinity and humanity of Christ and reject both Nestorianism (two persons) and Eutychianism (one blended nature). The persistence of the schism owes much to political rivalries, cultural nationalism, and ecclesiastical pride rather than genuine theological incompatibility. However, full communion between Chalcedonian and non-Chalcedonian churches has not yet been formally restored.

What is the Chalcedonian Definition and why does it matter for Christian doctrine?

The Chalcedonian Definition, issued by the Fourth Ecumenical Council in 451 AD under Emperor Marcian, is the church's most precise statement about the person of Jesus Christ, affirming His two natures (divine and human) in one person (hypostasis) without confusion, change, division, or separation. These four 'without' clauses were designed to exclude specific heresies: Eutychianism (confusion/change) and Nestorianism (division/separation). It matters because it defines the boundaries of orthodox Christology for the vast majority of Christians—Catholic, Eastern Orthodox, and Protestant—and provides the theological grammar for discussing how the eternal Son of God became a human being while remaining fully divine.

← Back to all articles