From about 1000 BCE · Ancient Israel, in the southern Levant
How Judaism grew from the covenant of ancient Israel, what it teaches about one God, the Torah and the people of Israel, how Jews practise it, and how communities spread across the world.
- Began
- Ancient Israel, in the southern Levant
- When
- From about 1000 BCE
- Founder
- Tradition names Abraham as the first patriarch and Moses as the lawgiver
- Followers
- nearly 15 million (2020)
- Main branches
- Second Temple Judaism, Rabbinic Judaism
- Scriptures
- The Torah, The Tanakh
In brief
- Judaism is the religion of the Jewish people. It traces itself to the covenant between God and Abraham, and to the Torah given through Moses at Sinai.
- Its central belief is in one God, creator of the world, who calls the people of Israel to live by the commandments of the Torah.
- Since the destruction of the Temple in 70 CE, Jewish life has centred on prayer, study and the home, guided by rabbis and the Talmud.
- Nearly 15 million people were Jewish in 2020. About 46% of them lived in Israel and about 40% in the United States.
From the text
בְּרֵאשִׁית בָּרָא אֱלֹהִים אֵת הַשָּׁמַיִם וְאֵת הָאָרֶץ Bereshit bara Elohim et ha-shamayim ve-et ha-aretz
“In the beginning God created the heavens and the earth.”
The holy book
The Torah
Tōrāh
- Language
- Hebrew
- Written
- Traditionally given to Moses; scholars date its final form to about the 6th–5th century BCE
- Contents
- Five books, read in 54 weekly portions
The Torah, “teaching” or “instruction”, is the first and holiest part of the Tanakh, the Hebrew Bible. Tradition holds that God gave it to Moses at Sinai; most modern scholars see it as woven from several older sources and given its final shape around the time of the Babylonian exile and the return.
Its five books are Genesis, Exodus, Leviticus, Numbers and Deuteronomy. They tell of the creation of the world, the flood, and the patriarchs Abraham, Isaac and Jacob; of slavery in Egypt, the exodus and the covenant at Sinai; and of the forty years in the wilderness, ending with the death of Moses in sight of the promised land. Woven through the story are the laws by which Israel is to live, which Jewish tradition counts as 613 commandments, from the Ten Commandments to rules on worship, food, justice and care for the poor. The rabbis taught that it came with an oral Torah, later written down in the Mishnah and Talmud.
In the synagogue the Torah is read aloud from a handwritten parchment scroll, a Sefer Torah, copied by a trained scribe without a single error. A portion is chanted every Sabbath, completing the cycle each year on the festival of Simchat Torah, when the scrolls are carried in joyful dances. The scroll is kept in the ark, dressed in a mantle, and never touched directly: readers follow the text with a pointer, the yad. Studying the Torah is itself a form of worship.
In pictures
- The Moorish-style interior of the city’s main synagogue, built in 1864–1866Choral Temple, Bucharest, Romania
- Torah scrolls dressed in velvet mantles embroidered with the Star of DavidHobart Synagogue, Tasmania
- The dome of a nineteenth-century synagogue decorated in Moorish styleSpanish Synagogue, Prague
- A restored synagogue built in 1884 for the Baghdadi Jewish communityMagen David Synagogue, Kolkata, India
- The Western Wall, the last remnant of the Temple Mount’s retaining wallsWestern Wall, Jerusalem
- The bimah, the platform from which the Torah is read, in Europe’s largest synagogueDohány Street Synagogue, Budapest
Photo credits
- Choral Temple, Bucharest, Romania · Joe Mabel, CC BY-SA 3.0
- Hobart Synagogue, Tasmania · CutOffTies, CC0
- Spanish Synagogue, Prague · Uoaei1, CC BY-SA 4.0
- Magen David Synagogue, Kolkata, India · DeepanjanGhosh, CC BY-SA 4.0
- Western Wall, Jerusalem · Someone35, CC BY-SA 3.0
- Dohány Street Synagogue, Budapest · Bence Damokos, CC BY-SA 3.0
Redrawn for this site as illustrated plates from the photographs above: cropped, recoloured, outlined, and with night skies painted in. The adapted images are shared under the same licences.
The covenant
Jewish tradition begins with Abraham, who left Mesopotamia for the land of Canaan at God’s call and received the promise of a covenant for his descendants. Generations later, the Bible tells, Moses led the Israelites out of slavery in Egypt, and at Mount Sinai they received the Torah. Historians cannot confirm these early stories, but they agree that a people called Israel lived in the hill country of Canaan by about 1200 BCE.
In the 10th century BCE, according to the Bible, King David made Jerusalem his capital and his son Solomon built the Temple there. In 586 BCE the Babylonians destroyed the Temple and exiled many Judeans. In exile, and after the return, the Torah took its final shape and became the centre of Jewish life. A second Temple stood from about 516 BCE until the Romans burned it in 70 CE.
After that loss, the rabbis rebuilt Judaism around the synagogue, prayer, study and the home. Jewish communities spread across the Mediterranean, the Middle East and Europe, and later the Americas. Jews from Dutch Brazil reached New Amsterdam, later New York, in 1654. In the Holocaust, Nazi Germany and its collaborators murdered about six million Jews. In 1948 the State of Israel was founded, and today it is home to the largest Jewish population.
- c. 1000 BCE Jerusalem
- 586 BCE Babylon
- 3rd c. BCE Alexandria
- 2nd c. BCE Rome
- by the 4th c. Yemen
- by the 4th c. Iberia
- 10th c. Rhineland
- 13th–14th c. Poland
- 1492 Ottoman lands
- 1590s Amsterdam
Exile and renewal
The fall of the Second Temple in 70 CE closed one era and opened another. A last great revolt against Rome, led by Simon bar Kokhba in 132–135, was crushed; Jerusalem was rebuilt as a Roman city, Aelia Capitolina, and Jews were barred from entering it. Leadership passed to the rabbis. In Galilee the patriarch Judah ha-Nasi edited the Mishnah around 200 CE, while in Babylonia, under Persian rule, the academies of Sura and Pumbedita produced the Talmud that would guide Jewish life for the next millennium and more.
From the 7th century most of the world’s Jews lived under Muslim rule. As dhimmis, “protected” non-Muslims, they paid a special tax and faced restrictions, but ran their own communal affairs. The heads of the Babylonian academies, the geonim, answered legal questions sent from Spain to Yemen, and Saadia Gaon (882–942) translated the Bible into Arabic. In al-Andalus, Muslim Spain, Hebrew poetry and philosophy flourished from the 10th to the 12th century, an age often called golden, though historians note that the image is partly idealised. Its greatest figure, Maimonides (1138–1204), left Córdoba during Almohad persecution and settled in Egypt, where he wrote the law code Mishneh Torah and the Guide for the Perplexed.
In Christian Europe, Ashkenazi communities grew along the Rhine and in northern France, where Rashi (1040–1105) wrote the commentaries on the Bible and Talmud still printed beside the text today. Their position worsened from the First Crusade of 1096, when mobs massacred the Jews of Speyer, Worms and Mainz. Accusations such as the blood libel spread, and Jews were expelled from England in 1290, from France in 1306 and from many German towns, while the Black Death of 1348–1349 brought further massacres. Many moved east to Poland and Lithuania, whose rulers granted them charters. In Iberia, riots in 1391 led to mass conversions, followed by the Inquisition and the expulsion from Spain in 1492. Sephardi exiles rebuilt their lives in the Ottoman Empire, North Africa, Italy and, later, Amsterdam.
The centuries after the expulsion were rich in mysticism. The Zohar, the classic work of Kabbalah, had appeared in Castile in the late 13th century; tradition ascribes it to the 2nd-century sage Shimon bar Yochai, while most scholars attribute it to Moses de León. In 16th-century Safed, in Galilee, Isaac Luria taught a new mystical system, and Joseph Karo compiled the Shulchan Aruch (printed 1565), which became the standard code of Jewish law. In 1665–1666 many Jews hailed Shabbetai Tzvi as the messiah, until he converted to Islam under Ottoman pressure. In 18th-century Eastern Europe, Israel ben Eliezer, the Baal Shem Tov, inspired Hasidism, which met fierce opposition from rabbis led by the Vilna Gaon.
Modern times brought both emancipation and new dangers. In Berlin, Moses Mendelssohn (1729–1786) championed the Haskalah, the Jewish Enlightenment. France granted Jews full citizenship in 1791, and most of Western and Central Europe followed during the 19th century, prompting debates over how far to adapt that produced the modern movements. In the Russian Empire, where most Jews were confined to the Pale of Settlement, pogroms from 1881 helped drive about two million Jews to emigrate, chiefly to the United States, before 1914. Others turned to Zionism, the movement for a Jewish homeland in the Land of Israel; Theodor Herzl convened the First Zionist Congress in Basel in 1897.
The 20th century transformed Jewish life. The Holocaust destroyed the great centres of Ashkenazi life in Eastern Europe. After the founding of the State of Israel in 1948, most Jews of the Middle East and North Africa left their homelands over the following decades, many of them for Israel, ending communities that had existed for well over a thousand years. From the 1970s, and above all after 1989, large numbers of Soviet Jews emigrated. By the end of the century Jewish life was concentrated in two great centres, Israel and the United States, with smaller communities across Europe, Latin America and beyond.
- 586 BCE Babylonians destroy the First Temple; many Judeans exiled to Babylon.
- 70 CE Romans destroy the Second Temple in Jerusalem.
- 132–135 Bar Kokhba revolt crushed; Jews barred from Jerusalem.
- c. 200 Judah ha-Nasi edits the Mishnah in Galilee.
- 1096 First Crusade: massacres of Jews in Speyer, Worms and Mainz.
- c. 1190 Maimonides completes the Guide for the Perplexed in Egypt.
- 1492 Jews expelled from Spain; many settle in the Ottoman Empire.
- 1565 Joseph Karo’s Shulchan Aruch, the standard law code, first printed.
- 18th century The Baal Shem Tov inspires Hasidism in Eastern Europe.
- 1897 Theodor Herzl convenes the First Zionist Congress in Basel.
- 1941–1945 Holocaust: about six million Jews murdered by Nazi Germany and collaborators.
- 1948 The State of Israel is founded.
One God and the Torah
The heart of Jewish belief is in one God, creator and ruler of the world, proclaimed in the prayer called the Shema: “Hear, O Israel: the Lord is our God, the Lord is one.” God made a covenant with the people of Israel, who are called to live by God’s teaching, the Torah The five books of Moses; more broadly, the whole of Jewish teaching. Glossary.
Jewish tradition counts 613 commandments (mitzvot The commandments of the Torah; traditionally 613. A single commandment, or a good deed, is a mitzvah. Glossary) in the Torah, covering worship, ethics, food, family and justice. The Ten Commandments are the best known. The rabbis taught that the written Torah came with an oral Torah that explains it, later written down in the Mishnah and Talmud.
Judaism puts more weight on deeds than on creeds. Medieval thinkers such as Maimonides drew up principles of faith, but what binds Jews together is above all a shared law, history and hope: the coming of a messianic age of peace and justice.
Three pillars
- iGod, one and unique
- iiTorah, the teaching
- iiiIsrael, the people
The Ten Commandments
- 1I am the Lord your God
- 2No other gods, no idols
- 3Do not take God’s name in vain
- 4Keep the Sabbath holy
- 5Honour your father and mother
- 6Do not murder
- 7Do not commit adultery
- 8Do not steal
- 9Do not bear false witness
- 10Do not covet
The rhythm of life
Jewish practice follows the rhythm of the week and the year. Every Sabbath (Shabbat The Sabbath, the day of rest from Friday sunset to Saturday nightfall. Glossary), from Friday sunset to Saturday night, observant Jews rest from work, light candles, bless wine and bread, and gather for meals and prayer.
Daily prayer and the reading of the Torah in the synagogue bind the community together, while study of Torah and Talmud is considered a form of worship in itself. The home is a holy place too: a mezuzah is fixed to the doorpost, and many families keep kosher food laws.
Life-cycle rites mark the path of a Jewish life: circumcision of boys at eight days, bar or bat mitzvah at the age of religious adulthood, marriage under a canopy (chuppah), and burial with mourning rites.
Shabbat
The Sabbath, from Friday sunset to Saturday night: candles, wine, family meals and rest from work.
Prayer and the synagogue
Prayer three times a day; the Torah is read aloud in the synagogue on Sabbaths and festivals.
Study
Learning Torah and Talmud is itself a form of worship, from the house of study to the family table.
The Jewish home
The mezuzah on the doorpost, kosher food (kashrut) and family rituals make the home a holy place.
Festivals
A year of holy days marking history and harvest, from Passover to Hanukkah.
Written and oral teaching
The Hebrew Bible, the Tanakh, has three parts: the Torah, the Prophets and the Writings. In the synagogue the Torah is read from a handwritten scroll, completing the whole cycle once a year.
Alongside the Bible stands the oral tradition. The Mishnah, edited around 200 CE, and the vast Talmud built around it record the debates of generations of rabbis. Jewish law (halakha) and much of Jewish thought grew from these texts and the commentaries on them.
The Torah
Hebrew
The five books of Moses, from Genesis to Deuteronomy, handwritten on a scroll and read in the synagogue through the year.
The Tanakh
Hebrew, some Aramaic
The Hebrew Bible: Torah (teaching), Nevi’im (prophets) and Ketuvim (writings), 24 books in all.
The Mishnah
Hebrew
The first written collection of the oral law, edited around 200 CE.
The Talmud
Hebrew and Aramaic
The Mishnah with centuries of rabbinic discussion. The Babylonian Talmud, completed around 500–600 CE, is studied to this day.
Movements of modern Judaism
Rabbinic Judaism shaped Jewish life for almost two thousand years. In modern times it divided into movements. Orthodox Judaism holds the whole Torah, written and oral, as divinely given and binding. Hasidic communities, born in 18th-century Eastern Europe, add a mystical warmth around their rebbes. Reform Judaism, born in 19th-century Germany, adapts practice to modern life, and Conservative (Masorti) Judaism takes a middle path.
Many Jews are also secular or traditional without belonging to a movement. Jewish communities differ, too, by heritage: Ashkenazi (Central and Eastern Europe), Sephardi (Spain and the Mediterranean) and Mizrahi (the Middle East and North Africa).
- Israelite religion
- Kingdoms of Israel and Judah. Worship of the God of Israel centred on the Temple in Jerusalem; the prophets call for loyalty to one God.
- Second Temple Judaism
- Judea and the diaspora. The Torah becomes the centre of life; groups such as Pharisees, Sadducees and Essenes.
- Rabbinic Judaism
- Land of Israel, Babylonia, then worldwide. After the Temple’s fall, the rabbis rebuild Judaism around prayer, study and the oral law of the Mishnah and Talmud.
- Hasidism
- Eastern Europe, today Israel and the US. A mystical revival around charismatic leaders (rebbes), stressing joy and devotion.
- Orthodox
- Worldwide. Holds the written and oral Torah as divinely given and binding in full.
- Conservative
- United States, Masorti worldwide. Keeps Jewish law while accepting that it develops through history.
- Reform
- Germany, then the US and Britain. Adapts practice to modern life and treats the law as a guide rather than binding.
Judaism today
Nearly 15 million people were Jewish by religion in 2020, about 0.2% of the world’s population, according to the Pew Research Center. About 46% lived in Israel, where Jews are 77% of the population, and about four in ten in the United States.
Europe’s Jewish population, once the largest in the world, has fallen to about 1.3 million, the result of the Holocaust and of emigration. Jewish life today is lived in many forms, from strict observance to cultural identity.
nearly 15 million
Jews in 2020, about 0.2% of the world
The figures count people who identify as Jewish by religion. Under a broader definition, the United States has about 7.5 million Jews. Source: Pew Research Center, 2025.
Clergy and religious life
Who leads, teaches and serves, each drawn in the dress that marks the role.
Symbols
Star of David
Two interlaced triangles; a Jewish emblem since the late Middle Ages, now on the flag of Israel.
More about this symbol →Menorah
The seven-branched lampstand of the Temple, the oldest symbol of Judaism.
More about this symbol →Torah scroll
The handwritten scroll of the five books of Moses, the holiest object in the synagogue.
More about this symbol →חי Chai
The Hebrew word for “life”, written with two letters; a sign of blessing and hope.
More about this symbol →
The year
- Purim
- February or March. Rescue of the Jews of Persia in the Book of Esther; costumes, gifts and a festive meal.
- Passover →
- March or April. The exodus from Egypt, retold at the seder meal with matzah.
- Shavuot
- May or June. The giving of the Torah at Sinai, seven weeks after Passover.
- Rosh Hashanah →
- September or October. The new year, with the blowing of the shofar.
- Yom Kippur →
- September or October. The Day of Atonement: a 25-hour fast of prayer and repentance.
- Hanukkah →
- Late November or December. Eight nights of lights recalling the rededication of the Temple in 164 BCE.
Questions people ask
Who is a Jew?
In traditional Jewish law, a Jew is someone born to a Jewish mother or who has converted to Judaism. American Reform Judaism and some other liberal movements also recognise descent through a Jewish father. Many Jews see their identity as a people and culture as well as a religion.
What is the difference between the Torah and the Talmud?
The Torah is the five books of Moses, the core of the Hebrew Bible. The Talmud records centuries of rabbinic discussion of the oral law that explains and applies the Torah.
Do Jews believe in an afterlife?
Jewish tradition speaks of a world to come and of the resurrection of the dead in the messianic age, but it puts the weight on how one lives in this world. Views differ between movements.
What is kosher?
Kosher food follows the dietary laws of the Torah as interpreted by the rabbis. They forbid certain animals, such as pork and shellfish, and the mixing of meat and milk, and set rules for slaughter.
Test what you know
8 questions on Judaism, each answer explained. More quizzes
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Question 1 of 8
What does the word “Torah” mean?
The Torah, “teaching”, is the first and holiest part of the Hebrew Bible: the five books of Moses.
Show the answer
Teaching or instruction. The Torah, “teaching”, is the first and holiest part of the Hebrew Bible: the five books of Moses.
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Question 2 of 8
How many books does the Hebrew Bible, the Tanakh, count?
Jewish tradition counts 24 books in three parts: Torah, Prophets (Nevi’im) and Writings (Ketuvim).
Show the answer
24. Jewish tradition counts 24 books in three parts: Torah, Prophets (Nevi’im) and Writings (Ketuvim).
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Question 3 of 8
When did the Romans destroy the Second Temple in Jerusalem?
The Second Temple stood from about 516 BCE until 70 CE. The Babylonians had destroyed the first one in 586 BCE.
Show the answer
70 CE. The Second Temple stood from about 516 BCE until 70 CE. The Babylonians had destroyed the first one in 586 BCE.
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Question 4 of 8
Who edited the Mishnah, the first written collection of the oral law, around 200 CE?
The patriarch Judah ha-Nasi edited the Mishnah in Galilee; the Talmud grew around it.
Show the answer
Judah ha-Nasi. The patriarch Judah ha-Nasi edited the Mishnah in Galilee; the Talmud grew around it.
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Question 5 of 8
Which prayer begins “Hear, O Israel: the Lord is our God, the Lord is one”?
The Shema proclaims the heart of Jewish belief: one God, creator and ruler of the world.
Show the answer
The Shema. The Shema proclaims the heart of Jewish belief: one God, creator and ruler of the world.
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Question 6 of 8
How long is the fast of Yom Kippur, the Day of Atonement?
Yom Kippur is a 25-hour fast of prayer and repentance in September or October.
Show the answer
About 25 hours. Yom Kippur is a 25-hour fast of prayer and repentance in September or October.
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Question 7 of 8
Which festival recalls the rededication of the Temple in 164 BCE?
Hanukkah’s eight nights of lights recall the rededication of the Temple after the Maccabean revolt.
Show the answer
Hanukkah. Hanukkah’s eight nights of lights recall the rededication of the Temple after the Maccabean revolt.
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Question 8 of 8
Where did about 46% of the world’s Jews live in 2020?
Pew counts nearly 15 million Jews in 2020: about 46% in Israel and about four in ten in the United States.
Show the answer
Israel. Pew counts nearly 15 million Jews in 2020: about 46% in Israel and about four in ten in the United States.
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Sources and further reading
- Pew Research Center, “How the Global Religious Landscape Changed From 2010 to 2020: Jews” (2025)
- Encyclopaedia Britannica, “Judaism”
- Nicholas de Lange, An Introduction to Judaism, 2nd ed. (Cambridge University Press, 2010)
- Norman Solomon, Judaism: A Very Short Introduction, 2nd ed. (Oxford University Press, 2014)