Condemnation · 431 · 22 June

Nestorius condemned at Ephesus

Nestorius lost his see because the church judged that his language divided Christ. His refusal to call Mary Theotokos sounded, to Cyril and the council, like a refusal to say that the one born of her was truly God incarnate. The controversy was not mainly about Mary's status; it was about the unity of Christ. Ephesus made that unity the test of orthodoxy in the East.

Icon of the Third Ecumenical Council at Ephesus.
The Council of Ephesus deposed Nestorius and affirmed Theotokos. Dionisius, via Wikimedia Commons · Public domain

At a glance

Type
Condemnation
Date remembered
22 June, AD 431
What kind of event is this?
A doctrinal line drawn against a teaching the church judged outside the apostolic faith.
Key line
The one born of Mary is God the Word incarnate.

Highlights

  • Nestorius was deposed.
  • Theotokos was defended.
  • Cyril's anathemas shaped the East.
  • Later churches disputed the label 'Nestorian.'

How it happened

What happened

The Council of Ephesus deposed Nestorius from the see of Constantinople.

The argument

Could one refuse Theotokos without dividing Christ into a human subject beside the divine Word?

What changed

The unity of Christ became the decisive test in the controversy.

Why it matters

It made clear that Marian language was serving Christology, not replacing it.

Aftermath

The Church of the East later developed outside the imperial church's anti-Nestorian settlement.

People in the story

Recommended reading

Primary texts from figures tied to this event.

Cyril of Alexandria

On the Unity of Christ · 438

Cyril's mature Christology defending the single subject of the incarnate Word.