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.
What Does 'Two Natures, One Person' Actually Mean?
The Chalcedonian formula 'two natures, one person' sounds like a contradiction. How can one being simultaneously be fully divine and fully human? This is what the formula actually means — and why it is not a contradiction.
By Rev. C•D•F• Warrington, M.Div.
Ordained Minister, M.Div.
Date
April 25, 2026
5 Essential Books for Studying the Chalcedonian Creed
The Chalcedonian Creed is the 451 AD Definition of Christ as one person in two natures, without confusion or division. These five books guide serious study of its history, theology, and ongoing significance.
By Rev. C•D•F• Warrington, M.Div.
Ordained Minister, M.Div.
Date
April 22, 2026
Eutychianism: The Other Heresy Chalcedon Rejected
While Nestorianism divided Christ into two persons, Eutychianism went to the opposite extreme and fused his two natures into one. The Council of Chalcedon rejected both errors with four precise adverbs.
By Rev. C•D•F• Warrington, M.Div.
Ordained Minister, M.Div.
Date
April 18, 2026