Cyril of Alexandria

Overview

Saint Cyril of Alexandria, also called Cyril I and Cyril the Great, was the twenty-fourth patriarch of the See of Saint Mark, holding office from 412 to 444. His career combined monastic theological formation, preaching, ecclesiastical administration, and participation in conflicts that affected both Alexandria and the wider Christian world. The Coptic Church commemorates him on 3 Abib and honors him as the “Pillar of the Faith.”¹¹³

His enduring importance rests particularly on his defense of the title Theotokos, “Mother of God,” and his leadership at the First Council of Ephesus in 431. His legacy also extends beyond that controversy: the surviving material includes extensive biblical interpretation, teaching on the sacraments, canonical correspondence, and a liturgical tradition associated with Saint Mark.^35101624

History and origins

Monastic formation and accession

Cyril spent his early years at Dayr Anba Maqar, the Monastery of Saint Macarius in the Nitrian Valley, described in his biography as a center of theological studies. After five years of intensive study, his uncle Theophilus, the reigning patriarch, summoned him to Alexandria and ordained him presbyter. Cyril became known in the city as an eloquent preacher.¹

Following Theophilus’s death, Cyril faced a rival candidate, the archdeacon Timotheus, who enjoyed government support. Nevertheless, Cyril was enthroned three days after his uncle’s death. The prefect Orestes opposed his accession, and competition between the patriarch’s ecclesiastical influence and the prefect’s civil authority repeatedly troubled the ensuing years.¹

One early action was Cyril’s confirmation of the rejection of Novatianism previously made by Dionysius I. The biographical passage traces that movement to Rome after the Decian persecution of 249–250, but its surviving extract breaks off before completing its account of the dispute over readmission to communion.¹

Conflict in Alexandria

The biography associates Cyril with the Parabolani, explaining their name as “those who disregarded their own lives” in service to the Church. It describes them as followers drawn from neighboring monasteries and available for drastic action. These supporters formed part of the setting in which ecclesiastical and civic rivalry became violent.¹²

In the surviving account of the conflict with Alexandria’s Jewish community, Cyril’s supporters, reinforced by monks from Wadi al-Natrun, seized synagogues, and Jews were expelled from the city. Orestes complained to Emperor Theodosius II, while Cyril presented the imperial court with a case concerning alleged Jewish sacrilege. The passage begins in the middle of the narrative, so it does not provide the complete preceding sequence of events.²

Hostility subsequently focused directly on Orestes. Monks attacked his chariot, and Ammonius struck him with a stone, seriously wounding him. The prefect’s men seized Ammonius and tortured him to death; Cyril treated the death as a crime and gave the monk a martyr’s funeral. Cyril’s career therefore included coercive conflict as well as theological leadership, rather than an exclusively devotional public life.²

Nestorius and the Council of Ephesus

Cyril’s greatest doctrinal confrontation was with Nestorius, patriarch of Constantinople. According to the biographical account, Nestorius rejected Theotokos and designated Mary only as the mother of Jesus in the flesh. Cyril first sent a corrective letter, then appealed to Theodosius II, Empress Eudoxia, and the emperor’s sister Pulcheria. He also contacted Celestine I of Rome, whose pontificate the passage dates to 422–432.³

The imperial family’s concern included the restoration of ecclesiastical peace and imperial unity. The disagreement thus moved from correspondence between bishops toward an ecumenical council. The First Council of Ephesus met in 431, with Cyril presiding; he opened its proceedings before the arrival of the Syrian delegation, which included Theodoret of Cyrrhus.³⁵

The council accepted Cyril’s formula and deposed and anathematized Nestorius. The arriving Syrian bishops held a rival assembly that excommunicated Cyril and supported Nestorius. The supplied account of Dioscorus adds that he attended Ephesus alongside Cyril, who had made him archdeacon and acted as his mentor.⁵⁶

The later biographical extract reports that the Cyrillian party recovered its freedom after diplomatic maneuvering and that Cyril returned to an enthusiastic reception in Alexandria. During the following two years, extensive correspondence brought reconciliation with leading churchmen and authorities, including John of Antioch. The surviving extracts do not narrate every intermediate stage of these negotiations.⁴

Reconciliation and final years

Cyril’s relations with other sees were not confined to confrontation. In 434, Proclus announced his appointment to Constantinople through synodical letters to Cyril and John of Antioch, and both approved it. The account places this exchange within wider discussion of whether bishops could legitimately move from one see to another.⁷

By 439, Cyril wrote to Sixtus III of Rome that peace had been restored. He signed a declaration affirming Mary’s divine maternity, possibly prepared by Theodoret. He continued opposing supporters of Nestorianism, but the biography describes him as avoiding an open confrontation over Theodore of Mopsuestia so as not to revive the controversy. Cyril died on 27 June 444 and was succeeded by Dioscorus I.⁴⁶

Theology and meaning

Theotokos and the unity of Christ

For Cyril, the dispute over Theotokos concerned the identity of Christ rather than an isolated expression of Marian devotion. The supplied theological account explains the decision of Ephesus as affirming that the one born from Mary was God. This connects the title “Mother of God” with the insistence that the incarnate Son is one, an emphasis also identified in later assessments of Cyril’s influence.³⁸⁹

The doctrine called communicatio idiomatum, or “interchange of properties,” helps explain this connection. It is expressed through such statements as the divine Word dying on the cross and Mary being the Mother of God. In this formulation, “The Word has imparted the glory of the divine operation to His own flesh, while at the same time taking to Himself what belongs to the flesh.” This formulation relates divine action and human experience to the same incarnate Word.¹⁰

Christology and the Eucharist

Understanding the Liturgy identifies Cyril’s opposition to Nestorianism as an important background to the priest’s three proclamations and final confession before communion. Its Cyrillian passage proclaims the death according to the flesh of the Only-Begotten Son, his resurrection and ascension, and the Church’s celebration of the unbloody sacrifice.¹¹

The consecrated gifts are not received as ordinary flesh, or as the flesh of a man merely associated with the Word by dignity or divine indwelling. They are “the life-giving and very flesh of the Word Himself.” Christology and the Eucharist are inseparable: the identity of the one whose flesh is received explains its sanctifying significance. Cyril is likewise among patristic witnesses to eucharistic sacrifice and the transformation of the gifts.¹¹¹²

Circumcision, salvation, and Baptism

In the Commentary on Luke, Cyril interprets the naming of Jesus at his circumcision as a reference to salvation. The quotation supplied by Coptic Church Review states that “as the death and resurrection of Christ were for our sake, so also was His circumcision.” The journal situates this observation within the feast’s emphasis on the name Jesus, explained as “Yahweh saves.”¹⁴

Cyril’s homilies on Luke also interpret circumcision as a type fulfilled in Baptism. He describes spiritual circumcision as participation in the Holy Spirit, through whom Christ removes the soul’s corruption rather than performing a bodily purification. Joshua’s crossing of the Jordan and subsequent circumcision of Israel provide the interpretive pattern: crossing the river corresponds to baptism, and the cutting that follows becomes an image of spiritual cleansing.¹⁵

This interpretation links biblical history with sacramental and moral transformation. The journal’s surrounding explanation connects baptismal entrance into Christ’s Body with participation in the Eucharist, treating the eating of Passover as its earlier type.¹⁵

Nature, hypostasis, and later interpretation

The biographical article describes Cyril’s use of physis, “nature,” and hypostasis, glossed there as “substance,” as contributing to later Christological confusion. It also states that subsequent generations regarded his theology as a key to orthodoxy while disagreeing over its interpretation. These are assessments made by the source, not a complete explanation of Cyril’s terminology.⁴¹⁶

A separate account of the Council of Chalcedon emphasizes Cyril’s influence on its insistence upon the unity of the Son, especially the repeated expression “the self-same.” That passage also acknowledges widespread Coptic rejection of the resulting definition. The sources therefore present different aspects of his reception: Cyril’s language could be invoked in a definition that many Copts rejected, while his authority remained central to their own tradition.⁹

Writings, texts, and terminology

Biblical commentaries

Cyril was a prolific writer of exegesis, theology, homiletics, and apologetics, more concerned with the substance of an argument than stylistic elegance. His Old Testament works include the following:⁴¹⁶

• De adoratione et cultu in spiritu et veritate.¹⁶
• Glaphyra, in thirteen books: seven on Genesis, three on Exodus, and one each on Leviticus, Numbers, and Deuteronomy.¹⁶
• A Commentary on Isaiah in five biblia, or books, with subdivisions described as logoi and tomoi.¹⁶
• A Commentary on the Minor Prophets.¹⁶

The New Testament catalogue includes a Commentary on John in twelve books divided into numerous chapters; a Commentary on Luke whose sixth- or seventh-century Syriac version preserves at least 156 homilies; and a Commentary on Matthew, covering twenty-eight chapters, of which only fragments remain. These differing states of preservation are important: the catalogue records both substantial transmitted works and compositions now known only incompletely.¹⁶

Apologetics, sermons, and letters

Cyril’s Contra Julianum refuted Emperor Julian’s Against the Galileans, written during Julian’s Persian campaign. No manuscript of Julian’s work survives, and almost its entire text can be recovered from Cyril’s refutation. Cyril’s apology consequently serves both as a defense of Christianity and as evidence for the argument it opposed.¹⁷

The biographical article credits Cyril with twenty-nine paschal homilies defining the date of Easter. Its catalogue separately lists twenty-two Homiliae diversae, eight dating from the summer of 431 during the Council of Ephesus, and identifies the Marian sermon delivered at Saint Mary’s Church in Ephesus as especially famous among the others.⁴¹⁸

The catalogue counts eighty-eight letters, printed in Patrologia Graeca 77, columns 10–390, with some surviving in Coptic, Syriac, and Armenian versions. It emphasizes their value for church history, doctrine, and ecclesiastical law. Their importance is illustrated by the supplied narratives of negotiation, episcopal appointments, and disciplinary appeals.¹⁸⁴⁷²⁴

Key terms and titles

The principal theological terms supplied for Cyril include Theotokos, “Mother of God”; physis, “nature”; hypostasis, rendered “substance” in the biography; and communicatio idiomatum, “interchange of properties.” Their significance lies in the relationship between Christ’s divinity, his human experiences, and the unity of the incarnate Son.³⁴¹⁰

The sources also preserve honorific vocabulary. Celestine I described Cyril as homo fidei catholicae defensor, “defender of the faith,” vir apostolicus, “apostolic man,” and probatissimus sacerdos, “upright priest.” Anastasius Sinaita called him the “Seal of the Fathers,” while Coptic tradition calls him the “Pillar of the Faith.”¹³

Liturgical and practical use

The Anaphora of Saint Cyril

The liturgy associated with Cyril is one of the three Coptic liturgies identified in Coptic Church Review, alongside those of Basil and Gregory the Theologian; that review describes Basil’s as the most commonly used. Cyril’s biography says that his extended liturgy was practiced in full mainly in monasteries and reflected older texts associated with Saint Mark.¹⁹⁴¹⁶

The specialized article on the anaphora gives a more precise account of this relationship. Coptic euchologia introduce it as “the Anaphora of our holy father Mark the Apostle, which the thrice-blessed Saint Cyril the Archbishop established.” It is substantially related to the anaphoric portion of the Greek Liturgy of Saint Mark, formerly used in the Melchite Church of Alexandria. The attribution therefore associates Cyril with establishing or preserving a received Egyptian tradition, rather than demonstrating that he composed every part of the surviving text.²⁰

The biographical catalogue connects this continuity with papyrus fragments discovered at Dayr al-Balaʾyzah in Asyut. It describes them as relating to a third-century Coptic euchologion and to an anaphora of Saint Mark probably used in Athanasius’s time and preserved by Cyril.¹⁸

Language and textual history

The specialized anaphora article distinguishes this traditional attribution from the surviving manuscript evidence. Both the Coptic Cyril and Greek Mark appear to derive from the same recension of an older Egyptian anaphora, whose earliest witnesses are Greek fragments. Sahidic Coptic fragments also survive. The extant witnesses to the present Bohairic text are no earlier than the twelfth century, and whether Bohairic was translated directly from Greek or through Sahidic remains unresolved.²⁰

The early Greek and Sahidic fragments generally resemble Coptic Cyril more closely than the surviving Melchite Mark manuscripts. Cyril’s version shows less influence from the Syrian Liturgy of Saint James, lacks the Byzantinizing tendencies found in the surviving Greek Mark tradition, and contains additions of its own. Thus a shared origin does not mean that the two transmitted forms are textually identical.²⁰

Prayer structure and the Lamb of God

In Coptic euchologia, Cyril’s anaphora is designed for insertion into the common eucharistic order supplied with Basil’s anaphora. Its proper prayers include those of the veil and kiss of peace, fraction and its preface, embolism and inclination after the Lord’s Prayer, and thanksgiving and inclination after communion.²⁰

The fraction prayers according to Cyril begin, “O Lamb of God who, by Thy suffering hast carried away the sins of the world.” The supplied article explains the Lamb of God imagery through John 1:29, Isaiah 53:7, and the relation between Christ’s sacrifice and the Old Testament sacrificial lamb. The prayer consequently expresses in worship the connection between Christ’s suffering and salvation.²¹

Paschal guidance

Cyril’s role in determining Easter was not limited to his paschal homilies. A commentary in The Rudder reports that an African synod wrote to him about the date of Pascha and learned it through his reply. The commentator offers possible explanations for the consultation, including incomplete knowledge or difficulty applying earlier regulations; those explanations are presented as possibilities rather than established circumstances.²²

Canonical teaching and ecclesiastical justice

The appeal of Bishop Peter

The canonical correspondence printed in The Rudder includes Cyril’s letter to Domnus of Antioch concerning Peter, a bishop who said he had been deprived of his church without a canonical hearing. Cyril observes that Domnus’s letters to him and Proclus continued to call Peter a bishop. He questions retaining the title while withholding the office without a proper judgment of the allegations.²⁴

Cyril’s concern is not simply to accept Peter’s innocence on his own testimony. He calls for a hearing capable of establishing either guilt or innocence, with recorded proceedings that would explain the judgment. If Peter chose to face his accusers, the case should be heard before Domnus and the bishops under him.²⁴²⁵

The letter also addresses the appearance of impartiality. Although Cyril says he does not assume that the bishops bear hostility toward a brother, he allows that some might withdraw if Peter reasonably suspected them, so that doubts about their participation would not obstruct a fair trial. This correspondence supplies a different dimension of his episcopal activity from the polemical narratives: ecclesiastical order is defended through an accountable judicial process.²⁵

Later canonical reception

The Rudder transmits Cyril’s canonical material under five canons, while its introduction notes that Balsamon divided the epistle into four and Aristenos into five. It identifies correspondence to Domnus and to bishops in Libya, and presents the material as subsequently confirmed within its own conciliar tradition.²³²⁴

Elsewhere, the same collection reports that Cyril and Atticus of Constantinople sent authentic copies of Nicene canons to the African church during a dispute over appeals to Rome. Its surrounding language is sharply anti-Roman; the historical claim pertinent to Cyril is his reported participation in supplying documentary evidence for distinguishing Nicene canons from those of Sardica.²⁶

The collection also invokes Cyril’s observation that pupils of prophets are called their sons when explaining the language of episcopal fatherhood. In another commentary, it cites his fourth book on Isaiah for an analogy between abiding grace and an artist’s skill, which remains present even when not actively exercised. These are examples of later canonical writers applying individual Cyrillian interpretations to broader arguments.²⁷²⁸

Church Fathers, saints, and connected figures

Cyril inherited Theophilus’s hostility toward John Chrysostom but eventually accepted Chrysostom’s name into the Alexandrian diptych. The biographical account reports his being persuaded to do so; The Rudder presents a devotional explanation in which the Theotokos appeared and instructed him. A further Coptic homily attributed to Cyril portrays Theophilus apologizing to Chrysostom’s ghost. These accounts concern the same troubled relationship but belong to different historical and literary modes.³²³²⁹

Cyril’s relationship with Athanasius also had both theological and literary expressions. The Rudder reports that, in a letter to John of Antioch, Cyril called Athanasius an accurate defender of the catholic Church and faith. Separately, the Coptic literary tradition preserved an Encomium of Athanasius attributed to Cyril, within a cycle that combined historical episodes with developed legend.³⁰³¹

Dioscorus was Cyril’s close companion, archdeacon, and successor; Cyril was his chief mentor. Another supporter, the Constantinopolitan archimandrite Eutyches, later called Cyril the “leader and chief of the holy synod at Ephesus” in a letter to Leo of Rome in 448. These connections document Cyril’s influence without requiring that every later position of his supporters be identified with his own.⁶³²

An Alexandrian church-history passage also records that the bodies of the martyrs Apa Cyr, or Abuqir, the monk, and John the soldier were transferred from Saint Mark’s Church to the Smaller Church in the Febrius on Pharos during Cyril’s patriarchate.³³

Historical reception and attributed traditions

Authority after his death

Cyril was an ultimate authority on Christological questions in the Eastern churches after his death. His twelve anathemas were solemnly accepted as canonical at the Second Council of Ephesus. Much later, the Sacred Congregation of Rites designated him a Doctor of the Church in 1882, illustrating a reception extending beyond the Coptic tradition.¹³³⁴

His writings also continued to supply language for later controversies. During the seventh-century disputes, a formula combining two natures with one activity or “energy,” used in a reconciliation proposal of 624, had an earlier expression in Cyril. This is evidence of later appropriation of his language, not evidence that he participated in those subsequent controversies.³⁵

Manuscripts and works attributed to Cyril

Sermons attributed to Cyril were represented in the monastic library of the Archangel Michael at Sopehes in the Fayyum. Fifty-six codices from that library, written between 820 and 920, passed almost entirely to the Pierpont Morgan Library and were published in facsimile by Hyvernat in 1922. Their contents place Cyril among a wider collection of Alexandrian, other episcopal, and monastic authorities.³⁶

Arabic tradition also transmitted Marian homilies under his name for 21 Tubah and 16 Misra. The latter, attributed to “Pseudo-Cyril of Alexandria,” is an Arabic homily apparently unknown in Coptic and found, within Arabic transmission, only among the Copts. Its two principal narrative subjects are the apostle Thomas and the Virgin’s heavenly vision.³⁷³⁸

The pseudo-Cyrillian text makes Cyril the speaker introducing an account attributed to John concerning Mary’s assumption, or suʿud. Its rhymed Arabic prologue varies among manuscripts. Its publication history includes material printed at Cairo in 1902 with support from Jirjis Hunayn of al-Zagaziq and in 1927 with support from ʿAbd al-Masih Sulayman. These details belong to the history of a later attribution and cannot establish the historical Cyril’s authorship of the narrative.³⁸

Editions and modern study

The biographical article lists editions associated with Basel in 1546, Paris in 1573 and 1605, and a ten-volume edition attributed to J. Aubert at Paris in 1859–1864. Its bibliography additionally identifies Patrologia Graeca 68–77, P. E. Pusy’s seven-volume Oxford editions of 1868–1877, and E. Schwartz’s publication of letters in Acta Conciliorum Oecumenicorum in 1922. The Rudder separately mentions a seven-volume Paris publication of 1638; the supplied extracts do not provide a critical reconciliation of these bibliographical notices.¹⁶¹³²³

Modern Coptic scholarly interest is illustrated by the 1984 volume of Coptologia, which included three articles devoted respectively to Cyril’s life and works, theology, and spirituality. Notices in Coptic Church Review likewise announced plans for special issues on him and invited scholarly articles, general studies, and translations.³⁹

Significance in Coptic Orthodox life today

Cyril’s continuing place in Coptic Orthodox life is expressed through his commemoration on 3 Abib, his title “Pillar of the Faith,” the anaphora bearing his name, and explanations of the communion confession that explicitly connect its language with his Christology. Together, these witnesses show a legacy sustained through the calendar, theological teaching, and sacramental worship rather than through historical remembrance alone.^1131119

At the same time, the sources require distinctions between Cyril’s writings, later interpretations of his terminology, liturgical texts transmitted under his authority, and pseudonymous narratives. Preserving those distinctions allows his significance to be described without treating every later Cyrillian attribution as an authenticated statement or composition by the fifth-century patriarch.^16203138