Christianity
Christianity is an Abrahamic monotheistic religion based on the life and teachings of Jesus of Nazareth. It is the world’s largest religion, with about 2.5 billion followers. Its adherents, known as Christians, make up a majority of the population in 157 countries and territories, and believe that Jesus is the Son of God, whose coming as the messiah was prophesied in the Hebrew Bible (called the Old Testament in Christianity) and chronicled in the New Testament.Christianity remains culturally diverse in its Western and Eastern branches, as well as in its doctrines concerning justification and the nature of salvation, ecclesiology, ordination, and Christology.
The doctrine of penal substitution, also known as vicarious atonement or substitutionary atonement, is the belief that Jesus Christ took on the punishment for humanity's sins:
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Explanation
This theory states that God requires satisfaction for sin before he can forgive it, and that Jesus suffered the punishment for humanity’s sins in order to satisfy God’s justice.
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Biblical support
Some Bible verses that support this theory include:
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Second Corinthians 5:21: “God the Father ‘made him to be sin who knew no sin’”
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Isaiah 53:4–6: The Messiah was to be “crushed for our iniquities”
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John 10:10: Jesus claims to be the “good shepherd” who lays down his life for the sheep
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Historical context
The Reformers, including Luther, Calvin, Zwingli, and Melanchthon, were pioneers in stating this idea.
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Contrast with other theories
The penal substitution theory contrasts with Anselm’s Satisfaction Theory, which holds that God is satisfied with a debt of justice being paid by Jesus.
The Nicolaitans were a Christian sect that appears in the New Testament's Book of Revelation. The Nicolaitans were considered heretical by the early Christian Church.
Here are some things about the Nicolaitans:
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Teachings
The Nicolaitans taught that it was acceptable to have one foot in both the Christian and pagan worlds. They also taught that liberty should replace license, and that grace should be perverted.
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Practices
The Nicolaitans were known for eating food offered to idols and for sexual immorality.
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Origin
The exact origin of the Nicolaitans is unclear, but some believe they were named after Nicolas, a proselyte who was one of the first seven deacons in Jerusalem. Others believe the name comes from the Greek word Nicolah, which means “let us eat”.
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Location
The Nicolaitans were described as existing in Ephesus, Pergamus, and other cities of Asia Minor.
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Other sources
The Nicolaitans are also mentioned in the works of Irenaeus, Tertullian, and Hippolytus.
The Carpocratians (wikipedia/en/Greek_language: Καρποκρατιανοὶ) was a wikipedia/en/Gnosticism
sect partially based on wikipedia/en/Platonism
that was established in the 2nd century wikipedia/en/Anno_Domini
and existed until the 6th. It was named after wikipedia/en/Carpocrates
, its founder, and gained its final form in the writings of his son, wikipedia/en/Epiphanes_(Gnostic)
. Only fragmentary sources remain about their beliefs and practices, and wikipedia/en/Proto-orthodox_Christianity
Christians of the time mischaracterised their wikipedia/en/Theology
to discredit them, accusing them of debauchery.
According to the wikipedia/en/Panarion of wikipedia/en/Epiphanius_of_Salamis
(ch. 26), and wikipedia/en/Theodoret
’s Haereticarum Fabularum Compendium, the Borborites or Borborians (wikipedia/en/Greek_language
: Βορβοριανοί; in wikipedia/en/Egypt
, Phibionites; in other countries, Koddians, Barbelites, Secundians, Socratites, Zacchaeans, Stratiotics) were a wikipedia/en/Christian_Gnosticism
wikipedia/en/Sect
, said to be descended from the wikipedia/en/Nicolaitans
. It is difficult to know for sure the practices of the group, as both Epiphanius and Theodoret were opponents of the group. According to Epiphanius, the sect were wikipedia/en/Libertine
who embraced the pleasures of the earthly world.
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The Reconquista was a series of military and cultural campaigns by European Christian kingdoms to reclaim the Iberian Peninsula from Muslim rule:
- Dates: The Reconquista began in 722 AD and ended on January 2, 1492.
- Location: The Reconquista took place in the Iberian Peninsula, which includes present-day Spain and Portugal.
- Participants: Christian soldiers, including warrior monks from the Knights Hospitaller, Knights Templar, and the Order of Calatrava, participated in the Reconquista.
- Goals: The Reconquista sought to “liberate” Al-Andalus, a territory that was ruled by Muslims for eight centuries.
- Results: The Reconquista culminated in the reign of the Catholic Monarchs of Spain.

The Reconquista was a bloody and harsh period that led to the Spanish Inquisition, which eliminated heretics. The Reconquista also led to the spread of Christianity through violence, an ideology that was later applied to the Spanish and Portuguese conquests of the New World.
Here is Part 1 of a full, deeply structured Christian Theology Map of Content, matching the precision and depth you expect. This section covers the scope, structure, and foundational categories. The next batches will unpack each domain further (e.g., Christology, Trinity, etc.).
Christian Theology
Christian Theology
The study of God, divine attributes, creation, salvation, and humanity in relation to God within the Christian tradition. It includes both historical development and systematic articulation of doctrine across denominations and time periods.
I. Foundational Subfields of Christian Theology
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Theology Proper (The study of the nature and attributes of God)
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Christology (Doctrine of the person and work of Jesus Christ)
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Pneumatology (Doctrine of the Holy Spirit)
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Trinitarian Theology (Doctrine of the Triune God)
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Anthropology (Christianity) (Doctrine of humanity and the imago Dei)
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Hamartiology (Doctrine of sin)
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Soteriology (Doctrine of salvation)
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Ecclesiology (Doctrine of the Church)
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Sacramental Theology (Theology of the sacraments)
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Eschatology (Doctrine of last things)
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Bibliology (Doctrine of Scripture and revelation)
II. Branches and Forms of Theology
III. Philosophical Frameworks in Theology
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Theodicy (Problem of evil)
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Apophatic Theology (Negative theology)
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Cataphatic Theology (Positive affirmations of God)
IV. Theological Sources and Norms (Wesleyan Quadrilateral)
Also connected to:
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Magisterium (in Catholic theology)
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Sola Scriptura (in Protestant theology)
V. Theological Movements and Schools
VI. Theology and Society
VII. Comparative and Interfaith Dimensions
VIII. Theology in Practice
IX. Canonical Theologians and Texts
I. Christology
The branch of theology dealing with the identity, nature, and work of Jesus Christ, the Second Person of the Trinity.
1. Major Christological Doctrines
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Hypostatic Union – The doctrine that Jesus Christ is one person with two natures: fully divine and fully human.
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Incarnation – The belief that God became flesh in the person of Jesus of Nazareth.
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Virgin Birth – The belief that Jesus was conceived by the Holy Spirit and born of the Virgin Mary.
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Pre-existence of Christ – The belief that Christ existed before the incarnation.
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Logos Christology – The understanding of Jesus as the Logos (Word) of God (cf. John 1:1).
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Kenosis – The “self-emptying” of Christ in taking on human form (Philippians 2:7).
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Christus Victor – A model of atonement where Christ defeats the powers of sin, death, and the devil.
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Penal Substitution – A Protestant doctrine asserting that Christ bore the punishment for sin.
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Moral Influence Theory – Jesus’ death inspires ethical transformation.
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Recapitulation – Jesus relives and restores all aspects of human life (Irenaeus).
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Suffering Servant Theology – Jesus fulfills Isaiah’s prophecy by suffering for humanity’s sins.
2. Major Christological Debates and Heresies
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Arianism – Denied the full divinity of Christ; condemned at the First Council of Nicaea (325).
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Docetism – Claimed Jesus’ humanity was an illusion.
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Nestorianism – Over-emphasized the disunion between Jesus’ divine and human natures.
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Monophysitism – Claimed Jesus had only one (divine) nature.
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Dyophysitism – Affirmed two natures in one person (Chalcedonian orthodoxy).
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Adoptionism – Jesus was a man who became divine at baptism.
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Apollinarianism – Christ had a human body but a divine mind.
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Ebionism – Early Jewish Christians who saw Jesus as a prophet, not divine.
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Kenotic Heresies – Excessive emphasis on Christ’s self-emptying as implying loss of divinity.
3. Christology by Denominational Perspective
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Eastern Orthodox Christology (heavily rooted in Cappadocian Fathers and Chalcedon)
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Lutheran: Communicatio Idiomatum (exchange of properties)
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Reformed: Covenant-based interpretations
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Anabaptist Christology – Strong emphasis on imitation of Christ.
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Charismatic Christology – Focus on the continuing work of Christ through the Holy Spirit.
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Unitarian – Jesus as exalted human
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Jehovah’s Witness – Jesus as archangel Michael incarnate
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Latter Day Saint Christology – Separate being from the Father, divine through exaltation
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4. Christological Titles
II. Trinitarian Theology
The doctrine that God exists eternally as three distinct persons—Father, Son, and Holy Spirit—who are consubstantial and coequal.
1. Core Concepts
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Perichoresis – Mutual indwelling of the three persons of the Trinity.
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Homoousios – The Son is “of the same substance” as the Father (Nicaea I).
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Hypostasis – Individual persons of the Trinity.
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Monarchy of the Father – In Eastern theology, the Father is the source of the Trinity.
2. Historical Development
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Nicene Creed – Formal articulation of Trinitarian doctrine.
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Cappadocian Fathers – Basil the Great, Gregory of Nyssa, Gregory of Nazianzus.
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Augustinian Trinitarianism – Psychological analogy of the Trinity (memory, understanding, will).
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Filioque Controversy – Whether the Spirit proceeds from the Father and the Son (Western) or from the Father alone (Eastern).
3. Trinitarian Heresies
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Modalism (Sabellianism) – One God acting in three modes.
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Tritheism – Belief in three separate gods.
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Arianism – Denial of co-eternity and consubstantiality.
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Subordinationism – The Son and Spirit are inferior to the Father.
4. Trinitarian Models (Modern Theology)
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Social Trinitarianism – Emphasizes the relational nature of the Persons.
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Latin Trinitarianism – Emphasizes divine unity and simplicity.
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Economic Trinity vs. Immanent Trinity – How God is in history vs. in Godself.
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Rahner’s Rule – “The economic Trinity is the immanent Trinity, and vice versa.”
5. Denominational Approaches
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Eastern Orthodox Trinity – Emphasizes the monarchy of the Father and perichoresis.
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Western (Latin) Trinitarianism – Developed by Augustine and Aquinas.
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Reformation Trinitarianism – Calvin and Luther’s reaffirmation of Nicene orthodoxy.
III. Soteriology
IV. Pneumatology
The theological study of the Holy Spirit: His person, divinity, work, and role in Christian life.
Core Doctrines
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Filioque – Procession from the Father and/or Son
Key Movements
V. Ecclesiology
VI. Christian Eschatology
VII. Sacramental Theology
VIII. Bibliology
The doctrine of Scripture — its nature, authority, interpretation, and role in theology.
Nature and Attributes
Interpretation and Use
Denominational Perspectives
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Sola Scriptura – Scripture alone (Reformation principle)
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Prima Scriptura – Scripture first, but alongside tradition
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Magisterial Use of Scripture (Catholic & Orthodox)
IX. Anthropology (Christianity)
The theological study of human beings in relation to God, creation, and salvation.
Core Concepts
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Imago Dei – Humanity made in the image of God
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Body, Soul, and Spirit – Tripartite vs. Bipartite models
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Relational Nature of Humanity (toward God, others, creation)
Theological Issues
X. Hamartiology
The theological study of sin, its origin, nature, consequences, and cure.
Origin and Nature
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Pelagianism – Denial of inherited sin nature
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Semi-Pelagianism – Middle path: grace and effort
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The Fall of Humanity – Genesis 3
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Total Depravity (Reformed theology)
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Concupiscence – Disordered desire
Types and Classifications
Theological Consequences
XI. Theology Proper
XII. Systematic Theology
The discipline of organizing theological doctrines into a coherent, interrelated whole, based on the topics of God, humanity, and salvation.
Structure
Features
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Confessional Systems (e.g. Reformed, Lutheran, Catholic)
Methodologies
XIII. Historical Theology
The diachronic study of how Christian doctrines have developed through history.
Periods
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Patristic Theology (1st–8th century)
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Medieval Theology (8th–15th century)
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Reformation and Post-Reformation Theology (16th–17th century)
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Modern Theology (18th century onward)
Doctrinal Milestones
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Neo-Orthodoxy (Barth, Brunner)
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Modern Liberal Theology (Schleiermacher, Harnack)
XIV. Constructive Theology
XV. Practical Theology
XVI. Doctrinal Development Theory
How Christian doctrine emerges, matures, or changes through time.
Key Thinkers
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John Henry Newman – Essay on the Development of Christian Doctrine
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Yves Congar – Tradition and Traditions
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Jaroslav Pelikan – The Christian Tradition series
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Thomas Kuhn (paradigmatic shifts applied metaphorically)
Models
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Lex Orandi, Lex Credendi – “The law of prayer is the law of belief”
Christian Theology by Denomination
I. Catholic Theology
II. Eastern Orthodox Theology
III. Reformed Theology
IV. Lutheran Theology
V. Anglican Theology
Foundations
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Via Media – “Middle Way” between Catholicism and Protestantism
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Hookerian Theology (Richard Hooker)
Doctrinal Themes
VI. Baptist Theology
VII. Pentecostal Theology
VIII. Anabaptist Theology
IX. Nontrinitarian Theologies
Grouped under their own detailed MoC (see: Nontrinitarian Christianity), including:
Miscellaneous Christian Theology Topics
🧠 Cognitive, Psychological, and Experiential
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Theology of the Body (John Paul II’s anthropology of embodiment and sexuality)
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Affective Theology (The role of emotions in faith and doctrine)
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Dark Night of the Soul (Mystical theology, especially St. John of the Cross)
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Spiritual Gifts Discernment (beyond Pentecostal traditions)
🪞 Cultural and Contextual
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Indigenous Theologies (contextualizations in African, Native, and Latin contexts)
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Minjung Theology (Korean liberationist theology)
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Dalit Christian Theology (India)
🏛️ Civic, Structural, Institutional
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Canon Law (Christianity) (broader than just Roman Catholic usage)
✍️ Literary and Artistic
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Theopoetics (use of poetic language and metaphor in theology)
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Christian Aesthetics (philosophy of art, icons, and worship space)
⏳ Esoteric and Apocalyptic
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Signs of the Times (eschatological typologies)
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Christian Kabbalah (early Renaissance Christian appropriation of Jewish mysticism)
👻 Paranormal and Supernatural
📚 Intertextual and Interreligious
📖 Pedagogy and Memory
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Catechesis (theological teaching method)
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Mystagogy (initiation into mysteries of faith)
📜 Niche Historical Movements
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Christian Humanism (Erasmus and Renaissance theology)
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Goliardic Theology (Medieval satire and theology)
🧬 Emerging and Interdisciplinary
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Neurotheology (brain and spiritual experience)
🗿 Pre-Christian or Proto-Christian
Global Christianity aka World Christianity