Third Council of Constantinople (680–681)

Third Council of Constantinople (680–681)
Name	Third Council of Constantinople
Native name	Σύνοδος Κωνσταντινουπόλεως Γʹ
Caption	Sixth Ecumenical Council site at Constantinople
Date	680–681
Location	Constantinople, Byzantine Empire
Type	Ecumenical council
Convoked by	Emperor Constantine IV
Attendances	bishops from Byzantine Empire, Rome, Lombardy, Patriarchate of Alexandria
Key decisions	Condemnation of Monothelitism, affirmation of dyothelitism
Previous	Third Council of Ephesus
Next	Second Council of Nicaea

Third Council of Constantinople (680–681)

The Third Council of Constantinople (680–681) was the Sixth Ecumenical Council that met in Constantinople under the authority of Emperor Constantine IV to resolve the theological controversy of Monothelitism and to affirm the doctrine that Christ possessed two wills and two energies (dyothelitism). The council involved major ecclesiastical figures from the Eastern Orthodox Church, representatives connected to the See of Rome, and regional hierarchs from across the Byzantine Empire, Syria, Egypt, and Italy.

Background and Context

The council arose from disputes following the Council of Chalcedon and debates over Christology that involved figures like Sergius I of Constantinople, Pope Theodore I of Rome, and later Pope Agatho. The controversy pitted proponents of Monophysitism and Monotheletism—including supporters of Sergius and adherents in Syria and Egypt—against advocates of dyophysite positions defended by the See of Rome, the Patriarchate of Alexandria, and Chalcedonian bishops in Asia Minor. Political pressures from the Byzantine–Sasanian War of 602–628 aftermath and negotiations with the Umayyad Caliphate made imperial authorities, notably Constantine IV, eager to achieve theological unity to stabilize frontiers and ecclesiastical administration. Preceding synods, such as regional councils in Sardica and dialogues involving Pope Martin I and the Quinisext Council, set the stage for a council with both theological and diplomatic aims.

Council Proceedings and Canons

Summoned by Emperor Constantine IV and prepared through correspondence with Pope Agatho and emissaries from Rome and Alexandria, the council convened in the imperial capital and produced a collection of canons and anathemas addressing Christological formulae, liturgical practice, and episcopal order. Proceedings included readmissions, deposition actions against supporters of Sergius, and deliberations informed by writings of Maximus the Confessor, Pope Leo I, and earlier creedal texts such as the Nicene Creed and the Chalcedonian Definition. The council issued decrees that reinforced adherence to Chalcedonian Christology and regulated episcopal behavior, while anathematizing specified writings and doctrines propagated by Pyrrhus of Constantinople and other Monothelite proponents. The canons stressed the relationship between Christ's wills and energies, using theological language drawn from Greek Fathers and earlier ecumenical formulations.

Christological Decisions and Anathemas

The principal theological outcome was the formal condemnation of Monothelitism and associated teachings, and the affirmation of dyothelitism—the doctrine that Jesus Christ has two wills (divine and human) corresponding to his two natures established at Chalcedon. The council issued a series of anathemas directed at figures and texts associated with Monothelitism, including charges against theologians like Sergius of Constantinople, Pyrrhus, Sophronius of Jerusalem's opponents, and various imperial edicts that had promoted single-will formulas. Appeals to authoritative works such as the letters of Pope Leo I and treatises by Maximus the Confessor were central to the council's reasoning. The Christological definitions sought to preserve continuity with the Nicene Creed and the Chalcedonian Definition while clarifying the relationship of will and operation in Christ against perceived Nestorian and Eutychian extremes.

Political and Ecclesiastical Aftermath

The council's decisions had immediate political resonance: Emperor Constantine IV leveraged the council to reinforce imperial orthodoxy and to mend relations with Rome and provincial sees in Italy and the Levant. Deposed Monothelite clergy were removed from offices, while the Roman papacy's role in affirming doctrine was strengthened, influencing subsequent relations between Byzantium and the Papacy. The condemnation of Monothelitism affected negotiations with communities in Syria and Egypt, where Miaphysite tendencies remained influential, contributing to later schismatic developments and alignments with emerging Islamic administrations, including interactions with the Umayyad Caliphate. Ecclesiastically, the council reinforced the authority of ecumenical synods and shaped subsequent councils such as the Second Council of Nicaea in structuring orthodoxy and canon law.

Participants and Notable Figures

Notable participants and influencers included Emperor Constantine IV, Pope Agatho (whose legates represented the See of Rome), Sophronius of Jerusalem, George of Constantinople? (various metropolitan bishops), and leading theologians like Maximus the Confessor, whose writings were pivotal to the council's formulations. Representatives from major patriarchates—Rome, Constantinople, Alexandria, Antioch, and Jerusalem—along with numerous metropolitans and bishops from regions such as Asia Minor, Phrygia, Galatia, Honorius of Canterbury-era English connections, and bishops with ties to Lombardy attended directly or through legates. Imperial officials, scribes, and notaries documented decrees that were dispatched across ecclesiastical networks reaching the Western Church and the Eastern Mediterranean.

Legacy and Historical Assessment

Historically, the council is judged as decisive in resolving the Monothelite controversy and restoring a Chalcedonian consensus endorsed by both Rome and Constantinople, shaping medieval Christology and ecclesiology. Its influence is visible in the reception of dyothelitism across the Eastern Orthodox Church and the Roman Catholic Church and in patristic scholarship centered on figures like Maximus the Confessor. Later historians and theologians have debated the council's implementation in regions with strong Miaphysite traditions and its efficacy in promoting doctrinal unity amid political fragmentation following the Arab conquests. The Sixth Ecumenical Council remains a focal point for studies of Byzantine theology, imperial policy, and the evolution of ecumenical authority in late antiquity.

Category:Ecumenical councils Category:7th century in the Byzantine Empire Category:Christology