Christ
Jesus Christ is one Person who is fully divine and fully human, without confusion or separation.
Why it matters
The title Theotokos protects the unity of Christ, and the saving significance of every part of human nature depends on its being assumed by the Word.
Historical context
Ephesus, Chalcedon, and Constantinople III supply the conciliar grammar received in Orthodox Christology.
Tradition note
This is a Chalcedonian Eastern Orthodox introduction. Local usages vary among autocephalous churches.
Memory hook
One Christ, fully God and fully human, without confusion or separation.
Key points
- The eternal Word assumes a complete human nature without ceasing to be God.
- Mary is Theotokos because the one born from her is the divine Son incarnate, not because she originates his divinity.
- Christ's divinity and humanity remain complete and distinct in their union in one hypostasis.
- Christ possesses a genuinely human natural will freely harmonized with his divine will.
- Christ acts divinely and humanly as the one incarnate Son; natural activity follows each complete nature.
Common questions
- What belongs to Christ's person, and what belongs to each nature?
- Why do two wills not imply two persons?
Practice and discussion
- Confess the Incarnation in the Creed and feasts.
- Read Marian titles first as claims about Christ.
Scripture
- John 1:14 — Incarnation - The eternal Word assumes a complete human nature without ceasing to be God.
- Luke 1:43 — Theotokos - Mary is Theotokos because the one born from her is the divine Son incarnate, not because she originates his divinity.
- Philippians 2:6–8 — Two natures - Christ's divinity and humanity remain complete and distinct in their union in one hypostasis.
- Luke 22:42 — Two natural wills - Christ possesses a genuinely human natural will freely harmonized with his divine will.
- Mark 5:30 — Two natural energies - Christ acts divinely and humanly as the one incarnate Son; natural activity follows each complete nature.
Primary sources
Gregory of Nazianzus argues:
Gregory insists that the humanity Christ assumes must be complete because what is not assumed is not healed.
For that which He has not assumed He has not healed; but that which is united to His Godhead is also saved.
Passage context and translation
Gregory rejects Apollinarianism by insisting that the Word assumed the fullness of human nature, including a human mind.
Before the excerpt
If anyone has put his trust in Him as a Man without a human mind, he is really bereft of mind, and quite unworthy of salvation.
After the excerpt
If only half Adam fell, then that which Christ assumes and saves may be half also; but if the whole of his nature fell, it must be united to the whole nature of Him that was begotten, and so be saved as a whole.
Sources and further reading
- Council of Chalcedon: Definition of Faith
This visual-world quiz node is a short fallback; see the linked Atlas dossiers for fuller treatment.