The Pre-Schism Church (1st–9th Centuries)

A historical sketch of the undivided Church of the first eight centuries — its apostolic foundations, the gradual emergence of the five great sees (the pentarchy), the age of persecution and its end under Constantine, the spread of monasticism, and the slow estrangement of the Latin West from the Greek East. This file treats these centuries as history; the doctrines defined in the period belong to Section 02, and the Filioque itself to Section 09.

Tradition: Pan-Orthodox

Apostolic Foundations

The Orthodox Church understands itself as continuous with the community founded by Christ and sent out at Pentecost (Acts 2). In the first generations, local churches were established in the major cities of the Roman world — Jerusalem, Antioch, Alexandria, Rome, Ephesus, Corinth, and others — each headed by a bishop understood to stand in the apostolic succession. The earliest non-canonical witnesses to this episcopal structure are the letters of St. Ignatius of Antioch (c. 107), who insists that nothing be done in the Church apart from the bishop (Ignatius, To the Smyrnaeans 8; To the Magnesians 6).

There was, in this period, no single administrative center. The unity of the Church was eucharistic and doctrinal rather than juridical: communities recognized one another by sharing the same faith and the same Eucharist, and by exchanging letters of communion. Rome held a recognized primacy of honor, grounded in its association with Sts. Peter and Paul and its status as the imperial capital, but the nature and limits of that primacy would become precisely the question that divided East and West centuries later (J. Meyendorff, Imperial Unity and Christian Divisions, Crestwood, NY: SVS Press, 1989).

The Emergence of the Pentarchy

By the fourth and fifth centuries, an informal hierarchy of the great sees had crystallized into what later Byzantine theory called the pentarchy — the five patriarchates of Rome, Constantinople, Alexandria, Antioch, and Jerusalem, ranked in that order of honor.

The ranking was set conciliarly and reflected a mixture of apostolic prestige and imperial geography:

• Nicaea I (325), Canon 6 affirmed the ancient customary jurisdictions of Rome, Alexandria, and Antioch over their surrounding regions — an acknowledgment of existing practice rather than a new grant (cf. ecumenical-councils.md).
• Constantinople I (381), Canon 3 declared that “the Bishop of Constantinople shall have the prerogative of honour after the Bishop of Rome, because Constantinople is New Rome” — explicitly political reasoning that Rome contested.
• Chalcedon (451), Canon 28 granted Constantinople “equal privileges” (isa presbeia) with Old Rome and jurisdiction over Pontus, Asia, and Thrace; the Roman legates protested, and Rome never accepted the canon (Council of Chalcedon, Canon 28; cf. Tanner, Decrees of the Ecumenical Councils, vol. 1).

Jerusalem was raised to patriarchal rank at Chalcedon in recognition of its standing as the mother church of the city of the Resurrection. The theory that these five sees together governed the universal Church received its classic formulation under Justinian and was systematized by later canonists; it was always more an idealized framework than an operative constitution, and three of the five sees (Alexandria, Antioch, Jerusalem) were substantially weakened first by the post-Chalcedonian schisms and then by the Arab conquests of the seventh century (A. Papadakis with J. Meyendorff, The Christian East and the Rise of the Papacy, Crestwood, NY: SVS Press, 1994).

Persecution and the Constantinian Settlement

For nearly three centuries the Church lived intermittently under the threat of Roman persecution, which ranged from local mob violence to empire-wide programs under Decius (250–251) and Diocletian (the “Great Persecution,” beginning 303). The blood of the martyrs became foundational to the Church’s self-understanding and to its liturgical calendar; the cult of the martyrs and the veneration of their relics are among the oldest strata of Christian devotion (W. H. C. Frend, Martyrdom and Persecution in the Early Church, Oxford: Blackwell, 1965).

The turning point came with Constantine. After his victory at the Milvian Bridge (312), the Edict of Milan (313), issued jointly by Constantine and Licinius, granted toleration to Christianity throughout the empire. Constantine subsequently patronized the Church, convened the First Ecumenical Council at Nicaea (325), and founded a new Christian capital, Constantinople, dedicated in 330. The legalization and then privileging of Christianity transformed the Church’s external situation entirely; by the end of the century, under Theodosius I, Nicene Christianity had become the established religion of the empire (Theodosius, Cunctos populos, 380, in the Codex Theodosianus 16.1.2). The relationship between Church and Christian emperor inaugurated here would later be theorized as symphonia — treated in byzantine-church.md.

The Orthodox tradition honors Constantine as “Equal-to-the-Apostles” (isapostolos), commemorated with his mother Helena on May 21. This is a liturgical and historical honor, not a claim that his personal life or political acts were beyond reproach; historians note the violence and complexity of his reign, and the Church’s veneration rests on his role in ending the persecutions and convening Nicaea (cf. Eusebius, Life of Constantine, a panegyric to be read critically).

The Patriarchates and Their Jurisdictions

In their mature form the five patriarchates governed broad territories:

• Rome held the entire Latin West, an immense and increasingly distinct sphere.
• Constantinople, after Chalcedon, governed Asia Minor, Thrace, and (in practice, over time) the Balkans and the missionary lands to the north.
• Alexandria governed Egypt and Libya — though after Chalcedon (451) the majority Miaphysite population formed a rival Coptic hierarchy, leaving the Chalcedonian (“Melkite”) patriarch a minority figure.
• Antioch governed Syria and the East, similarly divided after Chalcedon between Chalcedonian and Syriac (Miaphysite) hierarchies.
• Jerusalem governed Palestine.

The seventh-century Arab conquests placed Alexandria, Antioch, and Jerusalem under Islamic rule, drastically reducing their resources and political weight. From that point the effective leadership of Eastern Christendom fell increasingly to Constantinople, the one great Eastern see remaining within a Christian empire (Meyendorff, Imperial Unity and Christian Divisions; Papadakis, The Christian East and the Rise of the Papacy).

The Spread of Monasticism

Monasticism arose in the Egyptian desert at the turn of the fourth century. St. Antony the Great (c. 251–356), popularized by St. Athanasius’s Life of Antony, became the archetype of the solitary (anchoritic) ascetic, while St. Pachomius (c. 292–348) organized the first communal (cenobitic) monasteries in Upper Egypt. The movement spread with extraordinary speed: to Palestine (the lavras of St. Euthymius and St. Sabas), to Syria, to Asia Minor — where St. Basil the Great (c. 330–379) composed the Asketikon, the rule that shaped Eastern cenobitic life ever after — and to the Latin West through St. John Cassian and St. Benedict (Athanasius, Life of Antony; trans. PPS; cf. P. Rousseau, Basil of Caesarea, Berkeley: University of California Press, 1994).

Monasticism became the great reservoir of Orthodox spirituality and, repeatedly, the defender of doctrine — monks were prominent in the iconodule resistance during iconoclasm and in the later Hesychast controversy. The founding of Mount Athos as an organized monastic republic dates to the tenth century, with the Great Lavra of St. Athanasius the Athonite established in 963 (cf. Section 07: Monasticism).

The Drifting of East and West

Long before any formal rupture, East and West were growing apart — not chiefly over doctrine at first, but over the deeper structures that make mutual understanding possible.

Language. The shared Greek of the early Roman world gave way to a Latin West and a Greek East that increasingly could not read one another. By the time of St. Augustine, knowledge of Greek was already rare in the West; by the early medieval period, fluency in the other’s theological language was the exception. The great patristic syntheses developed along partly separate tracks, and translation errors and untranslatable terms (hypostasis / substantia, persona / prosopon) bred real misunderstanding (Papadakis, The Christian East and the Rise of the Papacy).

Politics. The Western Roman Empire dissolved in the fifth century, leaving the papacy as the principal surviving institution of Roman order in the West and drawing it into the world of the Germanic successor kingdoms. The Eastern Empire continued unbroken from Constantinople. The two halves of Christendom now lived under utterly different political conditions: a papacy increasingly compelled to act as a temporal power and seek new protectors, and an Eastern Church living in close, theorized partnership with a continuing Christian emperor.

The Carolingians. The decisive political wedge came when the papacy, seeking a protector against the Lombards and resentful of Byzantine iconoclast policy, turned to the Franks. Pope Leo III crowned Charlemagne “Emperor of the Romans” on Christmas Day, 800 — an act Constantinople regarded as a usurpation, since for Byzantines there was only one Roman emperor, in Constantinople. The Carolingian court also became the great Western champion of the Filioque, promoting its insertion into the Creed against the reservations of Rome itself; the Synod of Aachen (809) endorsed the addition, and Pope Leo III, while accepting the theology, famously declined to alter the Creed (cf. R. Haugh, Photius and the Carolingians, Belmont, MA: Nordland, 1975). The doctrinal substance of this dispute — and the eventual Roman adoption of the Filioque in the eleventh century — is treated in filioque.md, not here.

The Photian Era as Preview

These accumulating tensions surfaced sharply in the ninth century in the so-called Photian schism, a conflict between Patriarch Photios the Great of Constantinople and the papacy of Pope Nicholas I over jurisdiction in newly converted Bulgaria, the legitimacy of Photios’s elevation, and Western doctrinal and disciplinary innovations — above all the Filioque. A Constantinopolitan council of 867 went so far as to condemn and depose Nicholas, and it issued the first formal Eastern censure of the Filioque addition; a later council of 879–880, with papal legates present, restored Photios and reaffirmed the unaltered Creed (Britannica, “Photian Schism”; Papadakis, The Christian East and the Rise of the Papacy, ch. 1). The estrangement was, for the moment, patched up. But the issues it crystallized — papal authority, the Filioque, and rival jurisdictions — were precisely those that would resurface in 1054. The detailed chronology of the Photian councils and of 1054 itself is carried forward in byzantine-church.md.

The lesson the modern scholarship draws from this period is that there was no single moment at which “the East and West split.” There was, rather, a centuries-long drift — linguistic, political, cultural, and doctrinal — punctuated by quarrels that were repeatedly reconciled, until at last they were not.

See Also

• byzantine-church.md — the imperial Church, the Photian councils in detail, and the real chronology of 1054
• ottoman-period.md — what became of the Great Church after 1453
• The Seven Ecumenical Councils — the doctrine defined in these centuries
• The Filioque — the central doctrinal dispute, treated in full
• Constantinople (Ecumenical Patriarchate) — the later history of the senior see
• Monasticism — the ascetic tradition whose origins are sketched here

References

• Eusebius of Caesarea. Life of Constantine. Trans. Averil Cameron and Stuart G. Hall. Oxford: Clarendon Press, 1999.
• Frend, W. H. C. Martyrdom and Persecution in the Early Church. Oxford: Blackwell, 1965.
• Haugh, Richard. Photius and the Carolingians: The Trinitarian Controversy. Belmont, MA: Nordland, 1975.
• Ignatius of Antioch. Letters. In The Apostolic Fathers, trans. Bart D. Ehrman, Loeb Classical Library. Cambridge, MA: Harvard University Press, 2003.
• Meyendorff, John. Imperial Unity and Christian Divisions: The Church 450–680 A.D. Crestwood, NY: St. Vladimir’s Seminary Press, 1989.
• Papadakis, Aristeides, with John Meyendorff. The Christian East and the Rise of the Papacy: The Church 1071–1453 A.D. Crestwood, NY: St. Vladimir’s Seminary Press, 1994.
• Rousseau, Philip. Basil of Caesarea. Berkeley: University of California Press, 1994.
• Tanner, Norman P., ed. Decrees of the Ecumenical Councils. Washington, DC: Georgetown University Press, 1990.