Schism · 484 · 28 July
Acacian Schism begins
The Acacian Schism began when an imperial compromise tried to quiet the Christological fallout after Chalcedon. The Henotikon avoided some contested language in hopes of reconciling Chalcedonians and non-Chalcedonians, but Rome saw it as evasion. Pope Felix III excommunicated Acacius of Constantinople, and communion between Rome and Constantinople broke until 519. The pattern would return: emperors sought unity by formula, while bishops argued over whether the formula protected the faith.
At a glance
- Type
- Schism
- Date remembered
- 28 July, AD 484
- What kind of event is this?
- A break in communion where an unresolved argument became a visible division.
- Key line
- Unity by ambiguity did not work.
Highlights
- The Henotikon tried to calm the East.
- Rome saw evasion.
- Acacius was excommunicated.
- Communion broke until 519.
How it happened
What happened
Rome broke communion with Acacius of Constantinople over the Henotikon.
The argument
Could an imperial formula avoid Chalcedon's disputed language without betraying Chalcedon?
What changed
Rome and Constantinople entered their first formal schism.
Why it matters
It exposed the recurring conflict between imperial unity projects and doctrinal precision.
Aftermath
The schism was healed in 519, but it foreshadowed later Rome-Constantinople breaks.