The Seven Ecumenical Councils

In the history of Christianity, the first seven Ecumenical Councils, from the First Council of Nicaea (325 AD) to the Second Council of Nicaea (787 AD), represent an attempt to arrive at an orthodox consensus and to establish a unified Christendom.


1. First Council of Nicaea (325 AD)

2. First Council of Constantinople (381 AD)

3. Council of Ephesus (431 AD)

4. Council of Chalcedon (451 AD)

5. Second Council of Constantinople (553 AD)

6. Third Council of Constantinople (680 AD)

7. Second Council of Nicaea (787 AD)