What sources does the Coptic Orthodox Church consider infallible?

By CopticBot.ai (Coptic Space Inc.) · Last reviewed 2026-10-10

In the Orthodox Christian understanding, infallibility belongs ultimately to God alone and is preserved in His Church through the guidance of the Holy Spirit. Infallibility is not an inherent human attribute, nor does it belong to any single individual, bishop, or patriarch.

The sources through which the Holy Spirit infallibly preserves and delivers the divine truth to the Church are:

1. The Holy Scriptures (The Word of God)

The Holy Scriptures—consisting of both the Old and New Testaments—are divinely inspired by the Holy Spirit (2 Timothy 3:16) and are the supreme, infallible written rule of faith and doctrine.

• The Old Testament: Received according to the Septuagint (LXX) tradition, which includes the canonical books along with the Deuterocanonical books:
• Tobit
• Judith
• Additions to Esther
• Wisdom of Solomon
• Sirach (Ecclesiasticus)
• Baruch (including the Letter of Jeremiah)
• Additions to Daniel (Prayer of Azariah, Susanna, Bel and the Dragon)
• 1 and 2 Maccabees
• The New Testament: The 27 canonical books delivered by the Apostles.

The Scriptures are infallible in what they reveal concerning God, salvation, dogma, and morals. However, they are not intended to be interpreted through individual, private judgment, but within the life and mind of the Church that was inspired to write and canonize them.

2. The Dogmatic Decrees of the Ecumenical Councils

The Church as the Body of Christ is "the pillar and ground of the truth" (1 Timothy 3:15). When the Church gathers in an Ecumenical Council under the guidance of the Holy Spirit, its dogmatic definitions are protected from error.

The Coptic Orthodox Church recognizes the three undisputed Holy Ecumenical Councils held before the schism caused by the Council of Chalcedon (451 AD):

1. The First Ecumenical Council of Nicaea (325 AD): Formulated the core of the Creed and condemned the heresy of Arius, affirming that the Son is consubstantial (ὁμοούσιος, homoousios) with the Father.
2. The Second Ecumenical Council of Constantinople (381 AD): Completed the Nicene-Constantinopolitan Creed, affirming the full divinity of the Holy Spirit against Macedonius and condemning Apollinarianism.
3. The Third Ecumenical Council of Ephesus (431 AD): Led by St. Cyril of Alexandria, confirming the title of St. Mary as Theotokos and condemning the heresy of Nestorius, who divided Christ into two separate persons/natures.

The dogmatic formulations and the Creed established by these councils are considered immutable and infallible statements of Orthodox Christian doctrine.

3. Holy Apostolic Tradition (The Consensus of the Church)

Holy Tradition is the living transmission of the Gospel handed down directly from Christ to the Apostles and preserved undefiled across generations. It encompasses:

• The Apostolic faith and unwritten teachings received from the Apostles (2 Thessalonians 2:15).
• The sacramental and liturgical life of the Church (the Holy Liturgies, rites, and prayers).
• The universal consensus of the Holy Fathers (consensus patrum).

While individual Church Fathers—even great champions of orthodoxy like St. Athanasius the Apostolic, St. Cyril of Alexandria, or the Desert Fathers—are revered teachers and authoritative witnesses to the truth, no single Church Father is individually infallible. They were holy men, but human beings nonetheless. Only their collective consensus in harmony with Scripture and Apostolic Tradition expresses the infallible truth.

Distinction from Other Denominations

• Rejection of Papal Infallibility (Roman Catholicism): The dogma proclaimed by the Roman Catholic Church at the First Vatican Council (1870)—stating that the Pope of Rome is preserved from error when speaking ex cathedra on matters of faith and morals—is flatly rejected. Scripture shows that even St. Peter was rebuked by St. Paul when his actions faltered (Galatians 2:11), and throughout history, patriarchs and popes of various ancient sees fell into grave errors and heresies (e.g., Nestorius of Constantinople, Honorius of Rome, and Leo of Rome, whose Tome introduced dualistic language rejected at Ephesus). Authority in the Church is conciliar and apostolic, not vested in an autocratic individual.
• *Rejection of Sola Scriptura (Protestantism):* The Protestant premise that Scripture alone, severed from Holy Tradition, the Councils, and the historical Church, is the only authority is fundamentally flawed. Scripture was born out of the Church's living Tradition and canonized by her councils. Divorcing the Bible from Holy Tradition and apostolic authority has led Protestantism into countless doctrinal splits, private misinterpretations, and departures from historical Christianity.