Study spiritual evil the way Scripture demands — seriously

A rigorous, biblically grounded theology of Satan, demons, and spiritual powers — examined through careful exegesis, church history, and systematic theology, always anchored in the sovereignty of God and the triumph of Christ.

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Theoria: Demonology

"Christian demonology, done rightly, is not a study in fear — it is a study in the full scope of Christ's victory."

Theoria

What you'll learn

What you'll be able to do

  • Interpret key Old and New Testament passages on Satan, demons, and spiritual powers with exegetical accuracy and awareness of their literary context.
  • Distinguish confidently between what Scripture explicitly teaches about the demonic realm and what derives from later tradition, folklore, or popular culture.
  • Trace the historical development of Christian demonology from the early Church Fathers through the Reformation and into contemporary evangelical theology.
  • Engage the writings of major theologians — including Augustine, Aquinas, Luther, Calvin, and C. S. Lewis — and evaluate their perspectives with informed theological discernment.
  • Apply a biblically grounded framework to difficult interpretive questions surrounding spiritual warfare, demonic influence, possession, oppression, and apocalyptic symbolism.
  • Articulate the doctrine of spiritual evil within the broader framework of systematic theology, centering the victory of Christ and the believer's hope in Satan's final defeat.
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The curriculum

What's inside your school

6 modules · 27 lessons

1

Foundations: What Scripture Actually Says

Establishes the biblical and methodological groundwork for studying spiritual evil responsibly, with clarity about what Scripture reveals and where it is silent.

  • 1.1Why Study Demonology — and How to Do It WellIncluded
  • 1.2The Limits of Scripture and the Problem of SpeculationIncluded
  • 1.3Spiritual Evil in the Old TestamentIncluded
  • 1.4Spiritual Evil in the New TestamentIncluded
  • 1.5Demonology and Systematic TheologyIncluded
2

The Identity and Origin of Satan and the Demonic Realm

Examines who Satan is, how the rebellious spiritual beings fell, and what Scripture teaches — and does not teach — about the origin and nature of demons.

  • 2.1Who Is Satan? Names, Titles, and Biblical PortraitIncluded
  • 2.2The Fall of Rebellious Spiritual BeingsIncluded
  • 2.3The Nature and Rank of Demonic PowersIncluded
  • 2.4Scripture vs. Tradition: Where Extra-Biblical Ideas EnteredIncluded
3

The Work of Satan and Demons in the Biblical Narrative

Analyzes how demonic activity — temptation, deception, accusation, and opposition — unfolds across the sweep of biblical history.

  • 3.1Temptation, Deception, and the Accuser's StrategyIncluded
  • 3.2Demonic Opposition to God's Redemptive PurposesIncluded
  • 3.3Jesus, Exorcism, and the Authority of the KingdomIncluded
  • 3.4Demonic Powers in the Ministry of the Early ChurchIncluded
  • 3.5Apocalyptic Literature and the Symbolism of Evil PowersIncluded
4

Difficult Interpretive Questions: Possession, Oppression, and Spiritual Warfare

Engages the hardest pastoral and exegetical questions about demonic influence on human life, providing a balanced, scripturally-accountable framework.

  • 4.1Possession, Oppression, and Influence: Defining the TermsIncluded
  • 4.2Can a Christian Be Demon-Possessed? Evaluating the DebateIncluded
  • 4.3Spiritual Warfare: The Biblical FrameworkIncluded
  • 4.4Discernment, Testing Spirits, and Avoiding ExtremesIncluded
5

The History of Christian Demonology

Traces the development of demonological teaching from the early Church Fathers through the Reformation and into modern evangelical theology.

  • 5.1The Early Church Fathers on Satan and DemonsIncluded
  • 5.2Augustine and the Medieval Development of DemonologyIncluded
  • 5.3Luther, Calvin, and the Reformation PerspectiveIncluded
  • 5.4C. S. Lewis, Modern Evangelical Scholars, and Contemporary DebatesIncluded
  • 5.5Conspiracy Theories, Occult Culture, and Popular Media: Evaluating the DistortionsIncluded
6

The Triumph of Christ and the Believer's Hope

Culminates the course by centering the defeat of Satan in Christ's cross and resurrection, and anchoring the believer's identity and hope in that victory.

  • 6.1The Cross as the Decisive Defeat of the PowersIncluded
  • 6.2The Resurrection, Ascension, and the Reign of Christ Over All PowersIncluded
  • 6.3Satan's Final Defeat and the Renewal of All ThingsIncluded
  • 6.4Living Between the Ages: Wisdom, Confidence, and Theological BalanceIncluded

Who it's for

Is this you?

Theology students

Building a systematic framework for spiritual evil that holds up under academic scrutiny and integrates cleanly with the rest of Christian doctrine.

Pastors & ministry leaders

Seeking the theological grounding to shepherd confused or frightened congregants through genuine questions about spiritual warfare and the demonic without overreach or dismissal.

Serious independent learners

Committed Christians who refuse to settle for pop-theology takes on Satan and demons and want a curriculum anchored in Scripture, history, and sound reasoning.

Church history enthusiasts

Fascinated by how Augustine, Aquinas, Luther, Calvin, and Lewis each shaped — and sometimes distorted — the church's understanding of spiritual evil across the centuries.

Apologetics-minded believers

Wanting the tools to distinguish biblical Christianity from occult distortions, conspiracy theories, and the versions of demonology that popular media has manufactured.

Christian educators & small-group leaders

Looking for an academically responsible, pastorally sensitive resource to deepen their own understanding before they teach or facilitate discussion on this challenging topic.

Questions

Frequently asked

Your teacher

A note from your teacher

Theoria

Theoria

If you have picked up this page, I suspect you already know the frustration I'm describing.

You have seen the sensationalist end of this conversation — the breathless accounts of demonic encounters, the elaborate angelologies and hierarchies of hell with no real scriptural tether, the spiritual warfare books that read more like spiritual thriller novels than theology. And you have probably also felt the opposite pressure: the quiet embarrassment some circles feel about the topic, the tendency to explain away texts that don't fit neatly, the unspoken agreement not to take the demonic too seriously lest we seem credulous or unscientific. Neither of these is faithful. Neither actually serves the people in our pews, our classrooms, or our own souls.

What I have tried to build here is something different — a course that handles this subject the way any serious theological topic deserves to be handled. We go to the text first, carefully and repeatedly. We read the Old Testament passages that introduce spiritual evil, the Synoptic accounts of Jesus' exorcisms, Paul's language of principalities and powers, the visions of the Apocalypse — and we work to understand what each of these is actually saying, in its literary context, within the whole of Scripture. We do not import meaning from tradition before we have listened to the text. And when tradition does speak — and it speaks richly, from Origen and Augustine through Luther and Calvin to C. S. Lewis and contemporary evangelical scholarship — we engage it with genuine respect and genuine critical discernment.

I want to be honest with you about what this course is not. It is not a collection of dramatic anecdotes. It is not a deliverance ministry training program. It does not promise to resolve every interpretive dispute in Christian demonology, because some of those disputes are genuine and the intellectually honest response is to say so. What it does promise is a rigorous framework — one that takes the biblical witness seriously, traces the development of Christian thought responsibly, and never loses sight of the theological center that makes the whole subject bearable and even hopeful: the lordship of Jesus Christ over every power, seen and unseen.

That last point matters to me more than any other. Christian demonology, rightly understood, is not a study in fear. It is a study in the scope of Christ's victory. The Cross, the Resurrection, the Ascension — these are not epilogues to the story of spiritual evil. They are its decisive turning point. If you walk away from this course with greater theological precision and greater confidence in the reign of Christ, I will consider it a success.

Come, study carefully, ask hard questions, and let the text do what it has always done — illumine.

Theoria

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  • 6 modules, 27 lessons
  • AI-adaptive lessons tuned to your level
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