
Many years ago, I overheard a conversation among several Jews discussing the various denominations of Judaism and what each branch believes or doesn’t believe. I was surprised for two reasons. First, I hadn’t realized they were Jewish at all. Based on the way they dressed, they simply didn’t fit my preconceived image of what a Jew looked like. Second, I had no idea Judaism encompassed such a wide variety of denominations and perspectives.
At that point in my life, my only real exposure to Judaism had been during a job interview in Philadelphia with several Orthodox Jewish men. They wore the distinctive black-and-white attire commonly associated with Orthodox Judaism and, in keeping with their religious practice, politely explained that they could not shake my hand. I also remember them mentioning that, because of the Jewish High Holy Days and other fall festivals, I would have many days off during September and October. They offered me the position, but I ultimately declined for reasons entirely unrelated to Judaism.
Like a coastline gradually reshaped by the tides, my own spiritual journey took an unexpected turn. What began as simple curiosity led to years of studying the Tanakh, Jewish history, rabbinic literature, and the various streams within Judaism. After several years of intensive research, honest questioning, and prayerful reflection, the landscape of my faith changed. I converted to Judaism.
Even today, I often encounter the same assumptions I once held. When friends, coworkers, or acquaintances learn that I converted, specifically to Reform Judaism, they are frequently surprised to discover that Judaism has multiple denominations. Many are equally surprised to learn that not all Jews dress like the Orthodox they may have seen in movies or on television. In reality, Judaism is remarkably diverse, encompassing a wide range of beliefs, practices, and expressions of Jewish life.
One of the most common questions people ask when they learn about my conversion, or when they begin exploring Judaism themselves, is, “What do Jews believe?”
The answer isn’t as straightforward as many expect.
Unlike many Christian denominations, Judaism has never been defined by a single creed or universal statement of faith. Traditionally, Judaism has emphasized living the covenant through obedience to God’s commandments (mitzvot) more than subscribing to a fixed list of theological doctrines. While all Jews share a common heritage rooted in the God of Israel, the Torah, and the Jewish people, different movements within Judaism understand revelation, Jewish law, tradition, and even some theological concepts in different ways. One aspect I appreciate about Judaism is critical thinking is encouraged, and many voices or opinions are usually welcomed rather than shunned. The pages of the Talmud are full of rabbis debating said various opinions on every imaginable topic, establishing a foundation for thoughtful, and sometimes, intense discussions, among present-day and future Jewish generations.
Before exploring the various denominations and their approaches to Judaism, it is helpful to begin with the closest thing Judaism has to a historical statement of faith penned by a Jewish sage. With the help of ChatGPT, I summarized my findings as an introduction to the thirteen principles of the Jewish faith and the many denominations of Judaism.
~Sage(s): Noun – profoundly wise individual(s)~
Maimonides and the Thirteen Principles
Rabbi Moses ben Maimon, better known as Maimonides or the Rambam (1138–1204), was one of Judaism’s greatest philosophers, physicians, and legal scholars. In his commentary on the Mishnah, he articulated what became known as the Thirteen Principles of Faith.
These principles were not given at Mount Sinai, nor are they found together anywhere in the Tanakh. Rather, they represent Maimonides’ effort to summarize the theological foundations he believed undergirded Judaism.
His thirteen principles are:
- God exists.
- God is absolutely one.
- God has no physical form.
- God is eternal.
- God alone is worthy of worship.
- Prophecy is genuine.
- Moses was the greatest of all prophets.
- The Torah was given by God to Moses.
- The Torah will never be replaced or changed.
- God knows the thoughts and actions of humanity.
- God rewards righteousness and punishes wickedness.
- The Messiah will come.
- God will resurrect the dead.
Many Orthodox Jews still recite these principles today through the familiar declaration, Ani Ma’amin (“I Believe”).
Not Every Rabbi Agreed
It may surprise many readers to learn that Maimonides’ list was not universally accepted.
Several respected medieval rabbis argued that Judaism should not be reduced to a fixed creed. Rabbi Hasdai Crescas proposed six foundational principles, while Rabbi Joseph Albo argued that only three core principles were truly essential.
This disagreement itself illustrates something unique about Judaism: questions are welcomed. Throughout Jewish history, vigorous debate has often been viewed as a means of pursuing truth rather than a threat to it.
Why Are There Different Denominations?
Modern Judaism is often divided into several denominations or movements. These movements generally agree on many fundamental beliefs—such as the existence of one God, the importance of the Torah, and the covenant between God and Israel—but they differ significantly in how they understand revelation, Jewish law (halakhah), and the authority of tradition.
The greatest point of disagreement is not whether Judaism is valuable, but what gives Judaism its authority.
Some believe every commandment remains eternally binding exactly as interpreted through the rabbinic tradition.
Others believe Jewish law develops over time.
Still others see Judaism primarily as an evolving religious civilization in which individual conscience plays a greater role.
Understanding these differences helps explain why Jewish communities can look quite different while sharing the same heritage.
Modern – Day Different Denominations of Judaism
Orthodox Judaism
Orthodox Judaism accepts all thirteen of Maimonides’ principles as authoritative.
Orthodox Jews believe:
- The Torah was given directly by God to Moses.
- The Oral Torah, preserved in the Mishnah and Talmud, was also revealed at Sinai.
- Halakhah is fully binding.
- The commandments remain obligatory.
- A personal Messiah will one day gather the Jewish people, rebuild the Temple, and usher in universal peace.
- The resurrection of the dead will occur in the Messianic Age.
For Orthodox Judaism, the thirteen principles remain an accurate summary of Jewish belief. Orthodox have subsects such as Haredi Judaism and Hassidic Judaism, which have some different interpretations and cultural practices.
Modern Orthodox Judaism
Modern Orthodox Judaism shares the same theology as Orthodox Judaism while encouraging engagement with the modern world.
Modern Orthodox Jews generally embrace:
- Higher education
- Professional careers
- Scientific discovery
- Participation in democratic society
while maintaining complete commitment to halakhah.
The thirteen principles are fully affirmed.
Conservative Judaism
Conservative Judaism generally accepts the spirit of Maimonides’ principles but often interprets several of them more broadly.
Most Conservative Jews believe:
- God revealed the Torah, although many understand revelation as occurring through both divine inspiration and human participation.
- Halakhah remains authoritative but continues to develop through rabbinic interpretation.
- The Messiah may refer either to an individual descendant of David or to a future Messianic Age.
- Resurrection is interpreted literally by some and symbolically by others.
Thus, while honoring the thirteen principles, Conservative Judaism allows for a wider range of interpretation than Orthodoxy.
Reform Judaism
Reform Judaism places greater emphasis on ethical living and social justice than on adherence to fixed theological doctrines.
Many Reform Jews affirm:
- Belief in one God.
- The prophetic call to justice.
- The importance of Jewish identity and covenant.
However, Reform Judaism often understands several of Maimonides’ principles differently.
For example:
- The Torah is generally viewed as divinely inspired but written by human beings.
- Halakhah is not considered universally binding.
- Individuals determine which mitzvot hold spiritual meaning for their lives.
- Belief in a personal Messiah is often replaced by hope for a future Messianic Age characterized by justice and peace.
- Resurrection is frequently understood metaphorically or omitted altogether.
Because Reform Judaism values individual autonomy, beliefs may vary considerably from one member to another.
Reconstructionist Judaism
Founded in the twentieth century by Rabbi Mordecai Kaplan, Reconstructionist Judaism understands Judaism as an evolving religious civilization.
Many Reconstructionists:
- View the Torah as the religious literature of the Jewish people rather than direct divine revelation.
- Do not regard halakhah as binding.
- Understand God in nontraditional ways, sometimes as the sum of the forces that lead humanity toward goodness rather than as a supernatural being.
- Interpret the Messiah and resurrection symbolically rather than literally.
Consequently, Reconstructionist Judaism departs most significantly from Maimonides’ original formulation.
Jewish Renewal
Jewish Renewal is less concerned with systematic theology than with spiritual experience.
Drawing from Hasidism, Kabbalah, meditation, music, and social justice, Jewish Renewal encourages worship that engages both heart and soul.
Members may affirm many of the thirteen principles, reinterpret others, or focus less on formal doctrine altogether.
Comparing the Denominations
| Principle | Orthodox | Conservative | Reform | Reconstructionist |
| One God | ✓ | ✓ | ✓ | Usually, though often reinterpreted |
| Torah from God | Literal | Divine-human revelation | Inspired by God | Human religious literature |
| Halakhah Binding | Yes | Yes, but evolving | Generally no | No |
| Messiah | Personal Messiah | Messiah or Messianic Age | Usually Messianic Age | Symbolic future |
| Resurrection | Literal | Mixed views | Usually symbolic | Symbolic |
Unity Amid Diversity
Despite these differences, every major branch of Judaism recognizes the enduring significance of the Jewish people, the Torah, Shabbat, and the covenant with the God of Israel.
Perhaps that is why the old Jewish saying remains so fitting:
“Two Jews, three opinions.”
Far from being a weakness, Judaism has long viewed respectful disagreement as an opportunity to deepen understanding. Maimonides’ Thirteen Principles continue to influence Jewish thought more than eight centuries after they were written, even as different Jewish movements continue to wrestle with what faithful covenantal living looks like in every generation.



















