The 13 Principles of Jewish Faith — known in Hebrew as the Shloshah Asar Ikkarim — are the closest thing Judaism has to a universal creed. Formulated by Rabbi Moses ben Maimon (Maimonides, or "Rambam") in the 12th century, they distill what he considered the irreducible theological core of Jewish belief. For conversion candidates, knowing these principles is not optional: they form the backbone of Beit Din interviews, conversion study curricula, and daily prayer through the Yigdal hymn. This article walks through all 13 principles, one by one, with clear explanations, historical context, denominational nuances, and practical study guidance to help you internalize — not just memorize — the foundations of Jewish faith.
📌 Key Takeaways
- Maimonides wrote the 13 Principles around 1168 CE in his commentary on the Mishnah (Tractate Sanhedrin, chapter Chelek).
- The principles range from the nature of God to the resurrection of the dead — covering theology, revelation, and eschatology.
- The Yigdal prayer, recited in synagogues worldwide, is a poetic rendering of all 13 principles.
- Not all Jewish denominations treat these principles as binding dogma, but all conversion curricula reference them.
Who Was Maimonides, and Why Did He Write These Principles?
Rabbi Moses ben Maimon (1138–1204) was a Spanish-born philosopher, physician, and Talmudic scholar who became one of the most influential figures in Jewish intellectual history. Writing in Arabic under the title Kitāb al-Sirāj, his commentary on the Mishnah was completed when he was around 30 years old.
Maimonides worried that ordinary Jews — and especially those engaging with Greek philosophy and Islamic theology — lacked a clear statement of what Judaism actually required one to believe. Christianity had creeds; Islam had its shahada. Judaism, historically, had been more focused on practice (halakha) than on formalized doctrine.
The 13 Principles were Maimonides' answer to that gap. He declared that anyone who truly accepted these principles was a faithful member of the Jewish community, and that denial of any single one amounted to heresy (apikorsut). Centuries later, they were condensed into two liturgical poems: Yigdal (sung at the start or end of Shabbat services) and Ani Ma'amin (a statement beginning "I believe with perfect faith…" found in many prayer books).
💡 Good to know
When studying for your Beit Din, read the Ani Ma'amin declarations in your siddur alongside this guide. Connecting each principle to a liturgical phrase will help you retain them far more effectively than rote memorization. Our complete Siddur guide for conversion students explains where to find these passages in a standard prayer book.
The 13 Principles at a Glance
Before diving deep, here is a structured overview of all 13 principles grouped by theme:
| # | Theme | Principle (Short Form) | Hebrew Keyword |
|---|---|---|---|
| 1 | God's Existence | God exists and is the Creator | Metziot HaBoreh |
| 2 | God's Unity | God is absolutely one | Yichud HaBoreh |
| 3 | God's Incorporeality | God has no physical body or form | Shelilat HaGashmut |
| 4 | God's Eternity | God is eternal — first and last | Kadmut HaBoreh |
| 5 | Exclusive Worship | Only God may be worshipped | Avodat HaBoreh Bilvad |
| 6 | Prophecy | Prophecy exists and God communicates through prophets | HaNevuah |
| 7 | Moses's Uniqueness | Moses was the greatest of all prophets | Nevuat Moshe |
| 8 | Divine Torah | The Torah given to Moses is from God | Torah min HaShamayim |
| 9 | Torah's Immutability | The Torah will never be replaced or altered | Lo Titchadef HaTorah |
| 10 | Divine Omniscience | God knows all human thoughts and deeds | HaHashgacha |
| 11 | Divine Reward & Punishment | God rewards the righteous and punishes the wicked | Gemul v'Onesh |
| 12 | Messiah | The Messiah will come | Yemot HaMashiach |
| 13 | Resurrection | The dead will be resurrected | Techiyat HaMeitim |
Principles 1–5: The Nature of God
Principle 1 — God Exists
The first principle states that God exists and is the ultimate cause of all existence. Maimonides grounds this not in blind faith but in philosophical reasoning: a chain of causes must have a first, uncaused cause. This is not a casual theological point — it is the foundation upon which everything else in Judaism rests.
For conversion candidates, this principle is often the easiest to affirm and the hardest to articulate. Rabbis at a Beit Din may ask you why you believe God exists, not merely that you do. Engaging with Maimonides' Guide for the Perplexed (even in excerpt form) will give you vocabulary for that conversation.
Principle 2 — God Is Absolutely One
Judaism insists on absolute, indivisible monotheism. God is not one of many gods, nor a unity composed of parts, nor a Trinity. The Hebrew word Echad (one) in the Shema — "Hear O Israel, the Lord is our God, the Lord is One" — expresses this radical singularity.
This principle is one reason why Maimonides was deeply suspicious of any prayer directed toward angels, saints, or intermediaries. Worship must flow to God alone, without mediation.
Principle 3 — God Has No Physical Form
Any biblical verse describing God with hands, eyes, or a face must be read as metaphor (mashal), Maimonides argued. God cannot be contained in space, cannot move from place to place, and is utterly beyond material limitation.
This principle has direct implications for how Jewish prayer is understood. When you say Baruch Atah Adonai ("Blessed are You, Lord"), you are not addressing a being located in a specific place — you are orienting your consciousness toward an infinite presence.
Principle 4 — God Is Eternal
God exists outside of time. There was no moment "before" God existed, and there will be no moment when God ceases to exist. The Yigdal expresses this as: "He existed before anything that was created."
Philosophically, this principle also implies that God did not "begin" to exist — which separates Jewish theology sharply from mythological traditions where gods are born and can die.
Principle 5 — Only God May Be Worshipped
Even if one believes in the existence of spiritual beings (angels, for instance), directing worship, prayer, or sacrifice toward them is forbidden. This principle is the theological root of the prohibition against idolatry (avodah zarah) — one of the most serious transgressions in Jewish law.
For conversion candidates coming from traditions that honor saints or holy figures, this principle deserves careful reflection. The Beit Din may ask you directly about your previous religious practices and how you understand this shift.
Principles 6–9: Torah and Prophecy
Principle 6 — God Communicates Through Prophets
Prophecy is real: God can and does communicate divine wisdom to specially prepared human beings. Maimonides believed that prophecy was not an arbitrary gift but the result of intellectual and moral perfection — a kind of overflow of the Active Intellect onto a prepared soul.
This principle validates the entire prophetic literature of the Hebrew Bible (Nevi'im): Isaiah, Jeremiah, Ezekiel, and the twelve minor prophets all spoke authentic divine messages.
Principle 7 — Moses Was the Greatest Prophet
While other prophets received visions and dreams, Moses alone spoke with God "face to face" (panim el panim), directly and clearly, without symbolic imagery. This unique standing is what gives the Torah — the Five Books of Moses — its supreme authority above all other prophetic writings.
This principle matters practically: it explains why Divrei Torah (words of Torah) from the Chumash carry more legal weight in Jewish law than prophetic writings or rabbinic literature.
💡 Good to know
Understanding why Moses holds this unique status will help you answer Beit Din questions about the authority of the Torah versus later Jewish writings. Review our article on Jewish prayer basics for context on how the Torah reading cycle reinforces this hierarchy every Shabbat.
Principle 8 — The Torah Is of Divine Origin
The entire Torah — both the Written Torah (Torah shebiKhtav) and the Oral Torah (Torah shebe'al Peh) — was given by God to Moses at Sinai. Not a single letter, Maimonides insists, was composed by Moses on his own initiative.
This principle is theologically significant and denominationally contested. Orthodox Judaism holds it literally; Conservative Judaism embraces a more nuanced position on divine inspiration and human authorship; Reform and Reconstructionist movements often read this principle metaphorically. Your sponsoring rabbi will help you understand how your specific community interprets this.
Principle 9 — The Torah Will Never Be Altered or Replaced
No future prophet — however great — can abrogate the Torah or introduce a new divine law to replace it. This principle was Maimonides' explicit rebuttal to Christian and Islamic claims of supersession: the Torah given at Sinai is eternal and final.
For conversion candidates, this is one of the most consequential principles. It affirms that Jewish law (halakha) is not a preliminary stage to be transcended but the permanent framework for Jewish life.
Principles 10–11: Divine Knowledge and Moral Order
Principle 10 — God Knows All Human Thoughts and Actions
God's knowledge is not like human knowledge, which is limited, sequential, and dependent on observation. God knows the past, present, and future simultaneously and completely — including every private thought, hidden motive, and unspoken intention.
This principle has profound implications for Jewish ethics and prayer. Nothing is hidden from God, which means that authentic Jewish practice must be internally motivated, not merely performed for social approval.
Principle 11 — God Rewards and Punishes
The moral universe is not indifferent. God rewards those who obey the commandments and punishes those who violate them. Maimonides was careful here: he did not claim to explain precisely how or when this justice operates — but he insisted that moral action has cosmic consequence.
This principle interacts with one of the most difficult questions in Jewish theology: theodicy (tziduk hadin), or how to reconcile divine justice with innocent suffering. The Book of Job, studied in many conversion curricula, is Judaism's most sustained exploration of this tension.
⚠️ Warning
Do not conflate Principle 11 with a simplistic "prosperity gospel" theology. Jewish tradition explicitly rejects the idea that wealth signals divine favor or that suffering proves sinfulness. The Talmud (Berakhot 7a) notes that even Moses could not fully comprehend God's system of reward and punishment.
Principles 12–13: Messianism and the World to Come
Principle 12 — The Messiah Will Come
Judaism anticipates the arrival of a human, Davidic king — the Messiah (Mashiach, literally "anointed one") — who will gather the Jewish people from exile, rebuild the Temple, and inaugurate an era of universal peace and knowledge of God. Critically, Maimonides emphasizes that this Messiah is a human being, not a divine figure, and that his coming may be preceded by no supernatural signs.
Maimonides wrote in his Mishneh Torah (Laws of Kings, 11–12) that even if the Messiah seems delayed, "though he tarry, I will wait daily for his coming." This patient, undefeated hope is itself considered a form of religious virtue.
Principle 13 — The Dead Will Be Resurrected
The final principle affirms techiyat hameitim — the resurrection of the dead in the Messianic era. This is one of the most philosophically complex of the 13 principles, and Maimonides himself wrote a separate treatise (Ma'amar Techiyat HaMeitim) to clarify his position after readers accused him of undermining this belief.
Resurrection in Jewish thought is distinct from both the immortality of the soul and reincarnation (gilgul, a kabbalistic concept). It refers specifically to the return of the body-soul composite in the end of days.
How Different Jewish Movements Approach the 13 Principles
| Movement | Status of 13 Principles | Key Divergences | Conversion Implication |
|---|---|---|---|
| Orthodox | Binding dogma; denial = heresy | None — all 13 affirmed literally | Full affirmation expected at Beit Din |
| Conservative | Core but interpreted with nuance | Principles 8–9 often read with historical consciousness | Deep familiarity required; literal reading not always enforced |
| Reform | Historical reference, not binding creed | Messianism often recast as social justice vision; resurrection may be symbolic | Candidates expected to engage thoughtfully, not necessarily affirm literally |
| Reconstructionist | Culturally significant, theologically optional | Naturalistic theology reframes God as "power of being" | Personal theology valued over doctrinal conformity |
💡 Good to know
If you are unsure which movement aligns with your theological sensibilities, our comparison guide on Orthodox vs Conservative vs Reform conversion can help you identify the right fit before you invest years in a specific program.
Why These Principles Matter for Your Beit Din
The Beit Din — the rabbinical court that evaluates your readiness for conversion — is not a theology exam with right-or-wrong answer bubbles. But the 3 rabbis sitting across from you will probe your understanding of Jewish belief, and the 13 Principles form a natural framework for that conversation.
Here are 5 ways the Ikkarim surface in a typical Beit Din interview:
- Direct questions: "What do you understand about the Jewish concept of God?" maps directly onto Principles 1–5.
- Lifestyle questions: "How do you handle the prohibition against other worship forms in your daily life?" probes Principle 5.
- Torah authority questions: "How do you understand the divine origin of Jewish law?" touches Principles 7–9.
- Messianic questions: "How does Jewish messianism differ from what you previously believed?" addresses Principle 12.
- Eschatology questions: "What does Jewish tradition teach about death and the afterlife?" covers Principle 13.
Preparing a 2–3 sentence personal reflection on each principle — not a textbook recitation but your own genuine engagement — is one of the most effective ways to demonstrate readiness. See our detailed Beit Din preparation guide for a full breakdown of what rabbis are actually evaluating.
The Yigdal Hymn: Living With the 13 Principles
The Yigdal ("May He be magnified") is a 13-verse liturgical poem composed in medieval Italy, traditionally attributed to Daniel ben Judah of Rome (14th century). Each verse corresponds to one of Maimonides' principles. It is sung at the conclusion of Friday evening services in most synagogues worldwide.
Learning to identify which verse maps to which principle is an excellent study exercise:
- Verse 1 → Principle 1 (God's existence)
- Verse 2 → Principle 2 (God's unity)
- Verse 3 → Principle 3 (God's incorporeality)
- Verses 4–5 → Principles 4–5 (eternity and exclusive worship)
- Verses 6–7 → Principles 6–7 (prophecy and Moses's uniqueness)
- Verses 8–9 → Principles 8–9 (Torah and its immutability)
- Verse 10 → Principle 10 (divine knowledge)
- Verse 11 → Principle 11 (reward and punishment)
- Verse 12 → Principle 12 (the Messiah)
- Verse 13 → Principle 13 (resurrection)
If your synagogue sings Yigdal each Shabbat, you are liturgically reviewing all 13 principles every single week — a built-in study cycle most converts don't fully leverage.
Criticisms and Debates Around the 13 Principles
Maimonides' formulation was not universally accepted, and knowing the major critiques will deepen your theological literacy significantly.
Rabbi Hasdai Crescas (1340–1410) argued that Maimonides conflated beliefs that are essential to Judaism with beliefs that are simply true. Not everything true about God needs to be a formal dogma, Crescas maintained.
Rabbi Joseph Albo (1380–1444) reduced the essential principles to just 3: God's existence, divine revelation, and divine reward and punishment. His Sefer Ha-Ikkarim ("Book of Principles") is still widely studied.
Modern scholarship notes that Maimonides himself seemed to hold views in the Guide for the Perplexed that tension with some of his stated principles — particularly regarding providence and the nature of God's knowledge.
None of this undermines the practical importance of the 13 Principles for conversion candidates. Rather, it demonstrates that Jewish theology is a living, argued tradition — not a rigid catechism.
Frequently Asked Questions
Are the 13 Principles considered obligatory for all Jews?
Technically, no universal Jewish authority ever formally ratified the 13 Principles as binding law. However, Maimonides declared that anyone who denied any single principle forfeited their share in the World to Come — a formulation so strong that it became deeply embedded in Jewish consciousness. For practical purposes in an Orthodox context, they function as binding creed.
Do I need to memorize all 13 Principles for my Beit Din?
You should be able to name and briefly explain each one. In practice, most Beit Din rabbis are less interested in recitation and more interested in whether you have genuinely engaged with these ideas. Knowing the Yigdal by heart is a strong signal of preparation and synagogue integration.
How is the Jewish Messiah different from Jesus in Christian theology?
Maimonides' Messiah (Principle 12) is a mortal human king, a descendant of David, who achieves his mission through natural political and religious means — not supernatural intervention, sacrifice, or resurrection. Maimonides explicitly wrote that anyone who claimed to be the Messiah but died before completing the mission (rebuilding the Temple, gathering exiles, ushering in universal peace) was not the Messiah.
What does "resurrection of the dead" mean in Jewish theology?
Principle 13 refers to the physical revival of the dead in the Messianic era — not the immortality of the soul (which is a separate concept) and not reincarnation. Maimonides believed that after resurrection, the righteous would eventually return to a purely spiritual existence. This is one of the most debated points in medieval Jewish theology.
Do Reform Jews believe in the 13 Principles?
Reform Judaism does not treat the 13 Principles as binding dogma. The Pittsburgh Platform (1885) explicitly rejected "such Mosaic and rabbinical laws as regulate diet, priestly purity, and dress" and reframed messianism in terms of social progress rather than a personal Messiah. Reform Beit Din panels typically ask candidates to articulate their own theology rather than affirm Maimonides' formulation.
Why does Maimonides emphasize God's incorporeality so strongly?
Writing in the medieval Islamic world, Maimonides encountered Aristotelian philosophy and Islamic theology that both insisted on divine transcendence. He was deeply alarmed by Jewish folk piety that imagined God in human-like terms. Principle 3 was his clearest statement against what he called anthropomorphism — a danger he considered intellectually and spiritually corrupting.
Where can I read the 13 Principles in their original context?
The original text appears in Maimonides' commentary on Mishnah Sanhedrin, chapter 10 (Chelek). It is available in English translation in Isadore Twersky's A Maimonides Reader (1972) and in Philip Birnbaum's Daily Prayer Book, where the Ani Ma'amin declarations appear after the morning service.
Conclusion
The 13 Principles of Jewish Faith are more than a checklist for conversion study — they are an invitation to think seriously about what it means to stand in a covenantal relationship with an eternal, incorporeal, all-knowing, morally serious God. Maimonides gave Jewish tradition a vocabulary for its deepest theological commitments, and 850 years later that vocabulary is still alive in every Shema recitation, every Yigdal sung at Shabbat's close, and every honest Beit Din conversation.
Work through each principle not as a box to tick, but as a genuine question to sit with. Your conversion process is, at its core, a theological journey — and the Ikkarim are its most honest map.
Ready to test your understanding of Jewish theology and God-humanity themes? Explore the full quiz library on Join Judaism to practice exactly the concepts your Beit Din will probe.
