1. History by Ages

1.1. Early Church (27–325)

1.1.1. Apostolic Age (27–100 CE)

Early Christianity centered around the apostles.
Core events: Spread of the gospel by apostles, composition of Pauline Epistles, and formation of early churches.

1.1.2. Ante-Nicene Period (100–325 CE)

Development of early Christian theology and structure.
Persecution of Christians by Roman authorities.
Formation of key theological debates (e.g., Gnosticism, Marcionism).

1.2. Imperial Church (325–1054)

Consolidation of creeds, dominance of Catholic and Orthodox traditions.

1.3. Reformation and Beyond (1517–Present):

Emergence of Protestantism and Restorationist movements.

2. Notes

Theological Markers: Triniatrian / Non-Trinitarian

3. Creeds

3.1. Full Creeds

3.1.1. Primitive Creeds

1 Corinthians 15:3–7: Early oral confessions of Christ’s death, resurrection, and appearances.

3.1.2. Old Roman Creed (Shorter Apostles' Creed)

Basis for later Western creeds.

3.1.3. Major Trinitarian Creeds

Apostles' Creed:
- Western Christianity, foundational for Catholicism and Protestantism.
Nicene Creed
- Foundational for Trinitarian theology; affirmed at Nicaea and Constantinople.
Chalcedonian Creed
- Defined Christ’s two natures in one person.
Athanasian Creed
- Elaborates on the co-equality of the Trinity.

3.1.4. Later Creeds

Tridentine Creed (1564)
- Post-Reformation Catholic response.
Maasai Creed
- Modern African expression of Christianity.
Credo of the People of God
- Declared by Pope Paul VI in 1968.

3.2. Confessions of Faith

Formalized summaries of doctrine tied to denominations. Examples:

Westminster Confession (for Reformed churches)
Augsburg Confession (for Lutherans).

4. Denominations

3.1. Ante-Nicene Churches

Early Christian communities (e.g., Judaic Christians, proto-Orthodox churches).
Divisions largely theological (e.g., Gnostic, Montanist sects).

3.2. Trinitarian Denominations

3.2.1. Eastern Churches

Church of the East
- Nestorian influence; rejected Council of Ephesus.
- Primarily centered in Persia and later India.
Oriental Orthodoxy
- Miaphysite; rejected Chalcedonian Christology.
- Includes Coptic, Armenian, and Ethiopian Orthodox churches.
Eastern Orthodoxy
- Accepted Chalcedon; centered in Byzantium.
- Examples: Greek, Russian, and Serbian Orthodox Churches.

3.2.2. Catholicism

Roman Catholic Church and Eastern Catholic Churches.

3.2.3. Protestantism

Denominations arising from the Reformation, typically Trinitarian:
- Adventism
  - Eschatological focus (e.g., Seventh-day Adventists).
- Anabaptist
  - Radical Reformation (e.g., Mennonites, Amish).
- Anglican
  - Via media between Catholicism and Protestantism.
- Baptist
  - Emphasis on believer's baptism.
- Lutheran
  - Theology based on Martin Luther’s teachings.
- Methodism
  - Wesleyan revival movement within Anglicanism.
- Moravian
  - Pre-Reformation Christian unity emphasis.
- Quaker
  - Non-liturgical, focused on inner light.
- Pentecostal
  - Emphasis on charismatic gifts.
- Plymouth Brethren
  - Focus on simplicity and biblical literalism.
- Reformed Christianity
  - Calvinism and its derivatives (e.g., Presbyterian).
- Waldensianism
  - Pre-Reformation sect aligned with Protestantism.

3.2.4. Restorationist Movements (Trinitarian)

Movements seeking to "restore" early Christian practices
- Irvingians
  - Catholic Apostolic Church
- Swedenborgians
  - Mystical interpretation of Christianity.

3.3. Non-Trinitarian Denominations

3.3.1. Restorationist Movements

Church of Jesus Christ of Latter-day Saints (Mormons)
- Non-Trinitarian, polytheistic tendencies.
Jehovah’s Witnesses
- Non-Trinitarian; Arian influences.
Christadelphians
- Unitarians with restorationist theology.
La Luz del Mundo
- Non-Trinitarian.
Iglesia ni Cristo
- Non-Trinitarian, Christological emphasis on Jesus as human savior.

3.3.2. Unitarian Universalism

Rejects traditional Trinitarian theology
Focuses on humanist and rationalist principles