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The Seven Councils

The whole church in council — Nicaea to Nicaea, 325–787

“For it seemed good to the Holy Spirit, and to us…”

Acts 15:28 — the Council of Jerusalem, the pattern

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The Doctrine

An ecumenical council is the bishops of the whole inhabited world — the oikoumene — gathered to witness to the apostolic faith at the moment it is under threat. The pattern is Acts 15: the apostles and elders assembled at Jerusalem, deliberated, and wrote, “it seemed good to the Holy Spirit, and to us.” For Orthodoxy such a council is the highest earthly authority in the church: its dogmatic definitions, once received by the whole church, are held infallible — not because bishops cannot err, but because the Spirit does not abandon the whole body of Christ to error. This is the conciliar answer to the question Rome answers with the papacy and Protestantism answers with Scripture alone.

Orthodoxy counts exactly seven such councils — it calls itself “the Church of the Seven Councils” — all held between 325 and 787, all in or near Constantinople’s orbit, all before East and West divided. Rome receives these same seven and adds fourteen later Western councils (Lateran, Lyons, Trent, Vatican I and II among them), for twenty-one in all; the magisterial Reformers honored the councils — the first four especially — as faithful but fallible expositions of Scripture, binding only insofar as they agree with it. One more Orthodox conviction matters: reception proves ecumenicity. Councils have styled themselves ecumenical and been rejected — the “Robber Council” of Ephesus in 449 was overturned within two years — so a council’s authority is sealed not by who convened it but by the whole church’s recognition, sometimes generations later, that it spoke the faith.

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The History

Seven councils across four and a half centuries, each summoned by a crisis, each leaving the church a sentence it still says.

325 · Nicaea I

The presbyter Arius teaches that the Son is the first and greatest of creatures — “there was when he was not.” The emperor Constantine, newly patron of the church, summons some 318 bishops — many bearing the scars of the persecutions — to his lakeside palace at Nicaea. The council answers with one word, homoousios: the Son is “of one essence with the Father,” begotten, not made — and begins the Creed.

381 · Constantinople I

The fight moves to the Spirit: the Pneumatomachi (“Spirit-fighters”) grant the Son’s divinity but deny the Spirit’s. Under Theodosius, 150 bishops confess the Holy Spirit as “the Lord, the Giver of life, who with the Father and the Son together is worshiped and glorified,” completing the Nicene-Constantinopolitan Creed — the creed the church still says. Centuries later the West’s unilateral addition of the filioque to this very creed would help split East from Rome.

431 · Ephesus

Nestorius of Constantinople preaches against calling Mary Theotokos — God-bearer — and is answered by Cyril of Alexandria: the child she bore is one person, the eternal Son, so what is said of him may be said of God. The council vindicates the title, and the crowds of Ephesus escort the bishops home by torchlight.

451 · Chalcedon

Against the monk Eutyches, who so fused Christ’s divinity and humanity that the humanity all but dissolved, some 500 bishops define one person in two natures — “without confusion, without change, without division, without separation.” The cost is the church’s first lasting schism: the Oriental Orthodox — Coptic, Ethiopian, Armenian, Syriac — refuse the formula as Nestorian-sounding and part ways, a division that stands to this day.

553 · Constantinople II

The emperor Justinian convenes a council to condemn the “Three Chapters” — writings of three long-dead teachers tainted with Nestorianism — binding Chalcedon firmly to Cyril’s reading of it: the one who suffered in the flesh is “one of the Holy Trinity.” An olive branch to the East that never quite healed the Chalcedonian breach.

680–681 · Constantinople III

Against monothelitism — a compromise formula granting Christ only one will — the council confesses two wills, divine and human, the human freely obedient: “not my will, but yours.” The theology is largely Maximus the Confessor’s, who died maimed for it before he was vindicated. The council also condemns Pope Honorius by name for abetting the error — a fact cited ever after in debates over papal infallibility.

787 · Nicaea II

After decades of imperial iconoclasm — icons smashed, monks persecuted — the empress Irene convenes the seventh council back where the first met. Drawing on John of Damascus, it defines that icons may and must be venerated: honor (proskynesis) passes to the prototype, while worship (latreia) belongs to God alone — because God has truly become visible in the flesh. It is the last council East and West hold in common: after Nicaea, the roads diverge.