Skip to main content

Early Church and Christian Doctrine Development

The Post-Resurrection Community​

Pentecost and the Birth of the Church​

The Event (Acts 2):

  • Forty days after resurrection
  • Jewish festival of Shavuot (Weeks/Pentecost)
  • Holy Spirit outpouring in Jerusalem
  • Speaking in tongues (languages)
  • Peter's first sermon

Peter's Sermon:

  • Proclaims Jesus as risen, exalted
  • Repentance and baptism called for
  • Promises Holy Spirit to believers
  • 3,000 converted (Acts 2:41)

Community Formation:

  • Apostles teaching in temple
  • Breaking bread together (communion)
  • Signs and wonders performed
  • Daily meeting, sharing possessions
  • Growing numbers daily

Significance:

  • Beginning of the church
  • Holy Spirit empowering believers
  • Gospel's power to transform
  • Foundation for ongoing mission

Early Jerusalem Church​

Leadership:

  • Twelve apostles directed community
  • Peter prominent spokesperson (Acts 1-7)
  • James (Jesus' brother) emerges later
  • Elders appointed to assist

Characteristics:

  • Jewish believers initially
  • Continued temple worship
  • Kept Torah/oral law (Galatians 2:12)
  • Viewed Jesus as Messiah within Judaism
  • Post-resurrection appearances shaped faith

Conflict and Expansion:

  • Stephen's death (Acts 7) sparked persecution
  • Philip preached to Samaritans (Acts 8)
  • Cornelius conversion (Acts 10) - first Gentile
  • Peter defended baptizing Gentiles

Tension Over Gentile Inclusion:

  • Jewish law required Gentiles to become full Jews
  • Circumcision and dietary laws
  • Cultural identity bound to Torah
  • Radical inclusion of uncircumcised Gentiles unprecedented

The Council of Jerusalem (Acts 15, c. 49 CE)​

The Issue:

  • Gentiles converting; required circumcision?
  • Pharisaic Christians insisted on Torah observance
  • Paul opposed requiring circumcision
  • Major theological/practical dispute

The Decision:

  • Apostles gathered in Jerusalem
  • Peter spoke for inclusion
  • James rendered final decree
  • Gentiles not required to keep Torah

Conditions for Gentiles:

  • Four requirements (Acts 15:29):
    • Avoid meat sacrificed to idols
    • Avoid blood
    • Avoid meat of strangled animals
    • Avoid fornication

Significance:

  • Gentile Christianity affirmed
  • Church opened to non-Jewish nations
  • However, Jewish Christians could still keep Torah
  • Foundation for universal church

Later Pauline Disagreement:

  • Some Jewish Christians still pressured Gentiles
  • Paul resisted throughout ministry
  • By 2nd century: Gentile Christianity dominant
  • Jewish Christian communities marginalized

Apostolic Expansion and Missionary Work​

Peter's Ministry​

Early Leadership (Acts 1-12):

  • Peter prison, trials, persecution
  • Healed lame beggar (Acts 3)
  • Confronted Ananias and Sapphira (Acts 5)
  • Vision of clean/unclean (Acts 10)
  • Released from prison by angel (Acts 12)

Later Years:

  • Apparently led Jewish Christian faction
  • Paul confronted him at Antioch (Galatians 2:11-14)
  • Traditions place him in Rome
  • Early church tradition: Martyred under Nero
  • Claims to papal succession (Roman Catholic) debated

Paul's Apostolic Mission​

Background:

  • Originally Saul of Tarsus
  • Persecuted Christians
  • Damascus road experience (Acts 9)
  • Radical conversion to Christ

Missionary Journeys:

  • First Journey (Acts 13-14): Cyprus, southern Galatia
  • Second Journey (Acts 15-18): Galatia, Macedonia, Athens, Corinth
  • Third Journey (Acts 18-20): Galatia, Ephesus, Greece

Strategy:

  • Target major cities
  • Synagogue first (Jewish audience)
  • Then Gentile God-fearers
  • Establish churches with leaders
  • Stay months/years establishing communities
  • Letters to follow-up

Contributions:

  • Spread Christianity beyond Palestine
  • Missionary model for future generations
  • Theological interpretation of Christ's work
  • Emphasis on faith rather than works

Conflict:

  • Opposed by Jewish leaders
  • Imprisoned multiple times
  • Beatings, shipwrecks, persecutions (2 Corinthians 11)
  • Eventually executed in Rome (tradition)

Other Apostolic Work​

James (Jesus' brother):

  • Led Jerusalem church
  • Presided at Jerusalem Council
  • Wrote Epistle of James
  • Martyred 62 CE (Josephus)

John:

  • Traditional author of Fourth Gospel
  • Traditions place him at Ephesus
  • Possible author of 1, 2, 3 John
  • Said to have lived to old age

Thomas (Didymus):

  • Doubting Thomas myth
  • Traditions place him in Parthia
  • Eastern Christian traditions claim India
  • Gospel of Thomas (Gnostic text) attributed

Philip:

  • Preached to Samaritans
  • Later traditions: Phrygia
  • May have martyred

Andrew:

  • Peter's brother
  • Missionary traditions vary
  • May have traveled widely

Other Apostles:

  • Matthew: Tax collector turned disciple
  • Nathaniel (Bartholomew)
  • Simon the Canaanite (Zealot)
  • James son of Alphaeus
  • Judas son of James
  • Matthias (replaced Judas)

The New Testament Canon​

Formation of Canon​

Definition: Canon = authoritative books forming Scripture

Criteria for Inclusion:

  • Apostolic authority or connection
  • Widespread use in churches
  • Doctrinal orthodoxy
  • Inspiration/spiritual authority

Early Acceptance:

  • Paul's letters early recognized (early 2nd century)
  • Gospels established (by mid-2nd century)
  • Acts read alongside gospels
  • Some books slower: Hebrews, Revelation, James

Key Councils:

Athanasius of Alexandria (367 CE):

  • Listed 27 NT books (our current canon)
  • First clear articulation of NT canon
  • Earlier lists varied slightly
  • Some included/excluded apocryphal books

Council of Hippo (393 CE):

  • Formal approval of 27 books
  • African regional council
  • Affirmed existing consensus

Third Council of Carthage (397 CE):

  • Repeated affirmation
  • West African church approval
  • General acceptance established

Reasons for Exclusions:

Gospels Excluded:

  • Infancy Gospel of James (too legendary)
  • Gospel of Thomas (gnostic, later)
  • Gospel of Peter (docetic, diminishes suffering)

Epistles Excluded:

  • 3 Corinthians (not Pauline)
  • Letter to Laodiceans (Paul didn't write)
  • Epistle of Barnabas (later pseudonymous)

Acts Exclusions:

  • Acts of Paul (popular but later)
  • Acts of Peter (legendary)
  • Acts of John (docetic theology)

Apocryphal Writings​

Definition: Writings pseudonymously attributed to apostles

Types:

Gospels:

  • Gospel of Thomas: Sayings without narrative (gnostic)
  • Infancy Gospels: Legendary childhood of Jesus
  • Gospel of Peter: Resurrection account
  • Gospel of Judas: Judas as favored disciple

Acts:

  • Acts of Paul and Thecla: Paul's missionary exploits
  • Acts of Peter: Peter's martyrdom and exploits
  • Acts of Andrew: Andrew's apostolic work
  • Acts of Philip: Philip's ministry

Epistles:

  • 3 Corinthians: Paul writing to Corinthians
  • Epistle to Laodiceans: Paul's lost epistle
  • Epistle of Barnabas: Barnabas' letter
  • 1 & 2 Clement: Apostolic leaders' letters

Apocalypses:

  • Apocalypse of Peter: Vision of judgment
  • Apocalypse of Paul: Paul's heavenly vision
  • Coptic Apocalypse of Peter: Peter's vision

Value:

  • Show early church interest in certain themes
  • Legendary development of apostolic stories
  • Evidence of gnostic theology
  • Popular but not authoritative

Early Christian Theology and Doctrine Development​

Pre-Nicene Theology (1st-3rd centuries)​

Apostolic Fathers (1st-2nd century):

  • Clement of Rome: Church unity and structure
  • Ignatius of Antioch: Christ's divinity, church order
  • Polycarp of Smyrna: Martyrdom theology
  • Didache: Community ethics and practice

Apologists (2nd century):

  • Addressed pagan criticism of Christianity
  • Justin Martyr: Logos theology, Christ as word
  • Athenagoras: Resurrection hope
  • Tatian: Christian asceticism

Theological Developments:

  • Increasing Christological reflection
  • Gnostic Christianity growing (later rejected as heretical)
  • Martyrdom spirituality emphasized
  • Church structure developing (bishop/presbyters/deacons)

Gnosticism and Opposition​

Gnostic Beliefs:

  • Special knowledge (gnosis) achieves salvation
  • Physical world created by evil demiurge
  • Jesus as divine messenger without real incarnation
  • Despise physical body and matter
  • Salvation through esoteric knowledge

Christian Gnosticism:

  • Claimed Jesus taught secret knowledge
  • Denied humanity of Jesus (docetism)
  • Rejected resurrection of body
  • Disparaged God of OT (seen as inferior)
  • Writings: Gospel of Thomas, Gospel of Philip

Orthodox Response:

  • Irenaeus (c. 180 CE) refuted gnosticism thoroughly
  • Affirmed incarnation and bodily resurrection
  • Emphasized apostolic succession
  • Established regula fidei (rule of faith)

Early Trinitarian Thought​

Jewish Monotheism Problem:

  • Christianity inherited Jewish monotheism
  • Father, Son, Spirit all divine
  • How is this monotheistic?

Subordinationism:

  • Son subordinate to Father
  • Spirit subordinate to both
  • Attempts to maintain monotheism
  • Father as ultimate, ungenerated source
  • Solution: Ranked divinity

Modalism:

  • Father, Son, Spirit modes/aspects of one God
  • Like water (liquid, ice, vapor)
  • Not three distinct persons
  • Solution: Different roles

Arianism:

  • Son eternally generated by Father
  • Son is creature (not uncreated)
  • Son subordinate to Father
  • Before incarnation, Son didn't exist
  • Denied full divinity of Son

The Council of Nicaea (325 CE)​

Context:

  • Arian controversy splitting churches
  • Constantine called council for unity
  • 300+ bishops attended
  • Emperor's authority enforcing doctrine

The Arian Problem:

  • Arius: Son created by Father, not co-eternal
  • Growing following threatening church unity
  • Orthodox bishops opposed

The Council's Decision:

  • Christ is homoousios (same substance) with Father
  • Eternally begotten, not created
  • Co-eternal with Father
  • Of one essence with Father

Nicene Creed: "I believe in one God, the Father almighty... And in one Lord Jesus Christ, the Son of God, Begotten of the Father as only begotten, That is of the substance of the Father, God of God, light of light, Very God of very God, Begotten not made, of one substance with the Father..."

Aftermath:

  • Most bishops signed
  • Arius exiled
  • Continued controversy for centuries
  • Council's authority as ecumenical established precedent

The Council of Constantinople (381 CE)​

Issues Addressed:

  • Arian resurgence needed reaffirmation
  • Holy Spirit's divinity clarified
  • Final version of Nicene-Constantinopolitan Creed

Niceno-Constantinopolitan Creed:

  • Added clarity on Spirit: "Lord and giver of life"
  • Affirmed Spirit proceeded from Father (filioque disputed later)
  • Affirmed Spirit worshiped and glorified with Father and Son
  • Church described as "one holy catholic apostolic"

Legacy:

  • Remains authoritative in Orthodox, Catholic, Protestant churches
  • Affirmation of Trinity
  • Standard doctrinal statement

Christological Councils: Ephesus and Chalcedon​

Issues:

  • How are Christ's divine and human natures related?
  • Did Mary give birth to God (Theotokos--God-bearer)?
  • Was Christ one nature or two?

Council of Ephesus (431 CE):

  • Affirmed Mary as Theotokos (Mother of God)
  • Rejected Nestorius (separating natures too much)
  • Affirmed one person (hypostasis)
  • But still unclear on natures

Council of Chalcedon (451 CE):

  • Two natures in one person
  • "Without confusion, without change, Without division, without separation"
  • Fully divine, fully human
  • Not mixture or confusion
  • Remains standard Christian doctrine

Development of Christian Practice​

Sacraments/Ordinances​

Baptism:

  • Initiatory rite continuing Jesus' command
  • Immersion or sprinkling (both practiced)
  • Forgiveness of sins signified
  • Reception of Spirit
  • Church membership marked

Eucharist/Communion:

  • Memorial of Christ's death
  • Spiritual renewal
  • Varieties of interpretation:
    • Symbolic remembrance
    • Spiritual presence
    • Transubstantiation (substance change)
    • Consubstantiation

Other Sacraments (Catholic/Orthodox):

  • Confirmation
  • Penance
  • Extreme unction
  • Holy orders
  • Matrimony

Church Organization​

Early Models:

  • Charismatic leadership (prophets, teachers)
  • Elder/bishop governance
  • Deacon service ministry

Developed Structure:

  • Bishops: Overseers of regions
  • Presbyters: Elders assisting bishop
  • Deacons: Service leaders
  • Later: Metropolitan (city bishop), Patriarch (major city)

Authority:

  • Apostolic succession claimed (laying on of hands)
  • Bishops seen as guardians of doctrine
  • Councils for major decisions
  • Pope's primacy (Rome) increasingly claimed

Martyrdom Spirituality​

Persecution Context:

  • Roman persecution of Christians (Nero onward)
  • Underground communities
  • Martyrs (witnesses) honored
  • Encouraged perseverance

Martyrdom Theology:

  • Imitation of Christ's suffering
  • Witness to faith
  • Shortcut to heaven
  • Courage through Holy Spirit
  • Famous examples: Stephen, Peter, Paul

Emergence of Christian Institutions​

Councils and Authority​

Purpose:

  • Address theological disputes
  • Maintain doctrinal unity
  • Establish discipline and practice
  • Authoritatively interpret Scripture

Evolution:

  • Local synods (early)
  • Regional councils
  • Ecumenical councils (325+ CE onward)
  • Imperial endorsement increasing authority

Creeds​

Purpose:

  • Summarize faith briefly
  • Test orthodoxy
  • Teaching aid
  • Guard against false doctrine

Development:

  • Apostles' Creed (not apostolic but traditional)
  • Nicene Creed (325 CE)
  • Niceno-Constantinopolitan (381 CE)
  • Chalcedonian formulation (451 CE)

Canon Law​

Development:

  • Disciplinary rules for church community
  • Authority sources, worship practice
  • Penitential practices
  • Clergy discipline

Summary​

Early Church Features:

  • Jerusalem center initially
  • Rapid Gentile expansion
  • Apostolic authority grounding
  • Growing institutional structure
  • Doctrinal development through controversy
  • Persecution testing faith
  • Charismatic community gradually formalized

Doctrinal Emergence:

  • Trinity affirmed (Nicaea)
  • Incarnation clarified (Ephesus, Chalcedon)
  • Authority structures established (bishops, councils)
  • Scripture canonized (NT recognized)
  • Sacramental practice developing
  • Systematic theology beginning

Transformation:

  • From persecuted sect to imperial religion
  • From Jewish parentage to Gentile dominance
  • From local communities to universal church
  • From oral tradition to fixed Scripture
  • From charismatic to institutional authority

By 400 CE:

  • Core doctrines formulated
  • Scripture settled
  • Institutional structure established
  • Christianity transformed from movement to institution