Know every faith. Stand in yours.
A rigorous, tradition-by-tradition survey of the world's major religions — studied through an intellectually honest Christian lens — so you can engage every neighbor with accurate knowledge, genuine respect, and confident faith.

"Seeing other faiths clearly and standing in your own with confidence are not opposites — they are exactly what faithful, informed discipleship looks like."
— Theoria

What you'll learn
What you'll be able to do
- Trace the origins, historical development, and core teachings of Judaism, Islam, Hinduism, Buddhism, Sikhism, Confucianism, Daoism, Shinto, and selected new religious movements
- Analyze each tradition's answers to ultimate questions — ultimate reality, human nature, morality, salvation, and the meaning of life — within its own cultural and historical context
- Apply responsible comparative-religion methods, distinguishing description from evaluation, historical observation from theological judgment, and official doctrine from popular practice
- Evaluate key points of agreement and significant theological differences between Christianity and the world's major religions without reducing complex traditions to superficial comparisons
- Engage the historical interactions among religious traditions — dialogue, conflict, cooperation, and cultural exchange — including Christianity's emergence from Second Temple Judaism
- Articulate a thoughtful Christian response to religious pluralism and interfaith dialogue, and bear faithful witness to the gospel with clarity, humility, and respect
How it works
A school that adapts to you
This isn't a set of static videos. Every lesson is generated live and tuned to where you actually are.
We learn your level
A quick placement check tailors your starting point so you're never bored or lost.
Lessons adapt as you go
Each lesson is written for your pace and your goal, adjusting as your skills grow.
Your AI coach keeps you moving
Checkpoints, feedback, and gentle nudges turn progress into a real result.
The curriculum
What's inside your school
6 modules · 32 lessons

Foundations for Studying World Religions
Establishes the essential methods, vocabulary, and Christian framework needed to study world religions responsibly and charitably.
- 1.1Why Study World Religions?Included
- 1.2Tools of the Trade: Methods in Comparative ReligionIncluded
- 1.3Description vs. Evaluation: Seeing Before JudgingIncluded
- 1.4Official Doctrine, Popular Practice, and Internal DiversityIncluded
- 1.5A Christian Framework for Engaging Other FaithsIncluded
The Abrahamic Family: Judaism and Islam
Examines the origins, scriptures, core beliefs, and practices of Judaism and Islam, and traces their long, complex relationship with Christianity.
- 2.1The World of Second Temple JudaismIncluded
- 2.2Judaism: History, Scripture, and CovenantIncluded
- 2.3Jewish Belief and Practice: From Synagogue to ShabbatIncluded
- 2.4Islam: The Life of Muhammad and the Rise of a World FaithIncluded
- 2.5Islamic Belief and Practice: The Five Pillars and BeyondIncluded
- 2.6Christianity and the Abrahamic Traditions: Agreement, Difference, and HistoryIncluded
The Dharmic Traditions: Hinduism, Buddhism, and Sikhism
Explores the rich religious worlds that emerged from the Indian subcontinent, examining their distinct yet interrelated histories, texts, and worldviews.
- 3.1Hinduism: Origins, Sacred Texts, and the Many Faces of the DivineIncluded
- 3.2Hindu Belief and Practice: Dharma, Karma, and the Paths of LiberationIncluded
- 3.3Buddhism: The Buddha, the Dharma, and the SanghaIncluded
- 3.4Buddhist Traditions: Theravada, Mahayana, and VajrayanaIncluded
- 3.5Sikhism: The Guru Granth Sahib, the Ten Gurus, and a Faith of EqualityIncluded
- 3.6A Christian Dialogue with the Dharmic TraditionsIncluded
East Asian and Indigenous Traditions
Examines the religious and philosophical traditions of East Asia — Confucianism, Daoism, and Shinto — alongside a respectful introduction to indigenous religious worldviews worldwide.
- 4.1Confucianism: Social Harmony, Virtue, and the Way of HeavenIncluded
- 4.2Daoism: The Way, Nature, and the Art of Wu WeiIncluded
- 4.3Shinto: Kami, Ritual Purity, and Japanese Religious IdentityIncluded
- 4.4Indigenous Religious Traditions: Honoring Diversity and Avoiding StereotypesIncluded
- 4.5A Christian Dialogue with East Asian and Indigenous TraditionsIncluded
New Religious Movements and Secular Worldviews
Surveys the landscape of new religious movements and nonreligious worldviews that have grown significantly in the modern and contemporary eras.
- 5.1Understanding New Religious MovementsIncluded
- 5.2Selected New Religious Movements: Latter-day Saints, Jehovah's Witnesses, and OthersIncluded
- 5.3Eastern-Influenced and Esoteric Movements: New Age and BeyondIncluded
- 5.4Secular Humanism and Nonreligious WorldviewsIncluded
- 5.5A Christian Response to New and Secular WorldviewsIncluded
Religions in Relationship: History, Pluralism, and Faithful Witness
Brings the course together by examining how religions have interacted across history and equipping learners to engage religious diversity with Christian conviction, clarity, and grace.
- 6.1A History of Interreligious Encounter: Dialogue, Conflict, and ExchangeIncluded
- 6.2Geography, Politics, and the Shaping of Religious TraditionsIncluded
- 6.3Religious Pluralism: Mapping the DebateIncluded
- 6.4Religious Freedom, Human Dignity, and the Public SquareIncluded
- 6.5Bearing Faithful Witness: Interfaith Dialogue and the Christian MissionIncluded
Who it's for
Is this you?
Seminary students
Preparing for ministry and need a rigorous, theologically grounded introduction to world religions before stepping into a pluralistic parish or mission field.
Ministry leaders
Pastors, chaplains, and church educators who encounter people of other faiths regularly and want the knowledge and vocabulary to engage them well — not just kindly.
Serious lay learners
Intellectually curious Christians who read widely, take their faith seriously, and want a structured, scholarly resource beyond a popular-level survey.
Interfaith neighbors
Christians in religiously diverse communities — workplaces, neighborhoods, or families — who want to understand their neighbors' actual beliefs, not assumptions.
Apologetics students
Believers building a thoughtful Christian worldview who need accurate knowledge of competing truth claims before they can engage them honestly and effectively.
Adult education leaders
Sunday school teachers and small group facilitators looking for rigorous, pastorally sound curriculum to guide their congregation through world religions.
Questions
Frequently asked
Your teacher
A note from your teacher
Theoria
If you have ever found yourself in a conversation with a Muslim colleague, a Hindu neighbor, a friend exploring Buddhism, or a family member drawn to a new religious movement — and felt the quiet panic of not knowing enough to say anything useful — you already understand why this school exists.
Most Christians are never given the tools to engage other faiths well. We are handed either vague warmth ("all religions are basically the same") or reactive defensiveness ("just stick to the Bible") — and neither serves us, our neighbors, or the gospel. What we actually need is knowledge: careful, honest, historically grounded knowledge of what other people genuinely believe, where those beliefs come from, how they are practiced in real communities, and where they genuinely agree or disagree with Christian faith. That is what this school is built to give you.
I have designed this curriculum on two commitments that I hold together without apology. The first is intellectual charity: every tradition we study deserves to be understood accurately, on its own terms, from its own best sources — not through a caricature, not through a polemical summary, not through the lens of its worst practitioners. The second is theological honesty: I am a Christian, this school is taught from a Christian perspective, and I am not going to pretend otherwise. What I am committed to showing you is that those two commitments do not contradict each other. Seeing clearly and standing firmly are not in tension. They are, in fact, exactly what faithful discipleship requires.
We begin with the methods — the professional tools of comparative religion that allow you to describe before you evaluate, to hear before you judge. Those tools will stay with you through every unit: through the covenantal history of Judaism, the rise of Islam and its Five Pillars, the Sanskrit cosmology of Hinduism, the Four Noble Truths of Buddhism, the remarkable egalitarianism of Sikhism, the social philosophy of Confucius, the quiet naturalism of Daoism, the ritual world of Shinto, and the new religious movements reshaping neighborhoods across North America. At every turn, we will pause for genuine Christian dialogue — not a verdict, but a real theological conversation about where the traditions touch and where they diverge.
By the time we reach the final unit — on the history of interreligious encounter, the debate over religious pluralism, and the theology of faithful witness — my hope is that you will feel something you may not have expected: not anxiety about other faiths, but confidence. Confidence grounded not in dismissiveness, but in understanding. You will know what your neighbors believe. You will be able to say so accurately. And you will be equipped to share what you believe with clarity, humility, and genuine respect.
That is the invitation. I am glad you are here.
— Theoria
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- 6 modules, 32 lessons
- AI-adaptive lessons tuned to your level
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