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The Chalcedonian Creed, or Definition of Chalcedon, is the Christological statement adopted at the Fourth Ecumenical Council in 451 AD, defining Christ as one person with two natures — fully divine and fully human.
The Chalcedonian Creed
The Definition of Christ's Two Natures
About The Chalcedonian Creed
Everything you need to understand this historic confession — its origins, its theology, and its enduring place in the life of the Church.
Adopted 451 AD
Forged by the Council of Chalcedon, the Chalcedonian Creed has guided Christian thought and worship for centuries — a confession tested by time and affirmed by the Church.
Theological Clarity
The Chalcedonian Creed answers the most essential questions of the Christian faith — who God is, who Christ is, and what the Church believes together. Explore it article by article.
One Faith, Shared Heritage
With 33,000 denominations and one Church, the historic creeds are our common ground. This site exists to make that shared heritage clearly explained and freely available to every believer, student, and seeker.
Why This Site Exists
The Chalcedonian Creed, or Definition of Chalcedon, is the Christological statement adopted at the Fourth Ecumenical Council in 451 AD, defining Christ as one person with two natures — fully divine and fully human.
The Heavenly Network, in partnership with The Christian Chain, has developed this network of Church Creed and Confession sites in order to make the historic faith of the Church clearly explained, faithfully presented, and freely accessible to every believer, student, and seeker who wants to understand what the whole Church has always believed together.
This site is a scholarly, non-denominational reference site dedicated to the study of The Chalcedonian Creed. Our mission is to make The Creed accessible, academically rigorous, and contextually explained for Christians, theology students, church leaders, and researchers worldwide.
Editorial Standards
- All historical sources and translations are cited and attributed.
- Content is written in an academic, accessible tone for both lay and scholarly readers.
- We are committed to interfaith respect and avoid denominational bias or doctrinal debate.
- Affiliate recommendations are transparently disclosed.
Ephesians 4:4–6"There is one body and one Spirit — just as you were called to the one hope that belongs to your call — one Lord, one faith, one baptism, one God and Father of all."
Ecumenical Tradition — 451 AD
Council of Chalcedon
Latest Articles
Explore our most recent writing on this creed — its history, theology, and ongoing significance for the church today.
Cyril of Alexandria: Theologian of the Incarnation
Cyril of Alexandria's fierce defense of Christ's divine personhood laid the groundwork for the Council of Chalcedon. Explore how his theology shaped the church's confession of Christ.
By Rev. C•D•F• Warrington, M.Div.
Ordained Minister, M.Div.
Date
June 22, 2026
The Chalcedonian Definition and the Modern Church: Why It Still Matters
The Chalcedonian Definition was written for fifth-century controversies, but modern Christological errors repeat the same ancient patterns. That is why Chalcedon remains indispensable.
By Rev. C•D•F• Warrington, M.Div.
Ordained Minister, M.Div.
Date
June 13, 2026
How Chalcedon Answered Both Nestorius and Eutyches
Chalcedon navigated between two opposing Christological errors: Nestorius divided Christ's person, Eutyches confused His natures. The council's definition was precise enough to exclude both.
By Rev. C•D•F• Warrington, M.Div.
Ordained Minister, M.Div.
Date
June 6, 2026