Sefer Yetzirah (Hebrew: סֵפֶר יְצִירָה, meaning "Book of Formation" or "Book of Creation") is a text from Jewish mysticism. Early writings, like the Kuzari, described it as a book about math and language, not about Kabbalah. The word "Yetzirah" is more accurately translated as "Formation," while "B'riah" is used for "Creation." The book is usually credited to Abraham, though some believe it was written by Rabbi Akiva or Adam. Scholars today do not agree on who originally wrote it. Saadia Gaon believed the book's purpose was to explain how things in the universe came to be. Judah Halevi argued that the book's main goal, using its examples, was to help people understand how God is both powerful and one, even though God appears in many forms. The famous first lines of the book are as follows:

Origin

A mysterious story in the Babylonian Talmud says,

Modern historians do not know the exact origin of the text, and this topic is heavily debated. Some scholars believe it may have been written during the early medieval period, while others suggest it is based on older traditions found in the book. Most scholars today think the text was written during the Talmudic period.

The Jewish Encyclopedia states that the main ideas in the book are typical of the 3rd or 4th century. A work like this, written during the Geonic period, could only have been created in the style of Jewish gnosis, a type of knowledge that did not change after the 4th century and may have already disappeared. Richard August Reitzenstein placed the historical origin of the Sefer Yetzirah in the 2nd century BCE. Christopher P. Benton believes the Hebrew grammar in the text suggests it was written around the time of the Mishnah, which was in the 2nd century CE.

The way letters are divided into vowels, mutes, and sonants also appears in Greek texts.

The exact date and origin of the book cannot be confirmed unless a critical version of the text is available. The first printed edition (Mantua, 1562) includes two versions of the text, which were used by commentators as early as the 10th century. The shorter version (Mantua I.) was annotated by Dunash ibn Tamim or Jacob ben Nissim, while Saadia Gaon and Shabbethai Donnolo wrote commentaries on the longer version (Mantua II.). The shorter version was used by later commentators like Judah ben Barzillai and Nachmanides, so it became the standard in most editions. The longer version was less well-known, and the text in the first edition may have been copied from Donnolo’s commentary. Both versions contain differences that have not yet been studied in detail.

The two versions differ in content and arrangement. The longer version includes paragraphs not found in the shorter one, and the way the material is organized often changes the meaning. While the longer version likely includes additions and changes not in the original text, it also has older and better readings that are valuable for a critical edition.

Mystics believe Abraham, the biblical patriarch, used the same method to create the calf prepared for the three angels who visited Sarah in the story of Genesis 18:7. Other miracles attributed to rabbis from the Talmudic era are also linked to this book by rabbinic commentators.

The appendix of the Sefer Yetzirah (6:15) says Abraham received a divine revelation about mystical knowledge. Classical rabbis and scholars like Shabbethai Donnolo and Judah HaLevi never doubted Abraham was the book’s author.

In Pardes Rimonim, Moses ben Jacob Cordovero (Ramak) mentions a view that Rabbi Akiva wrote the book, but he also says Abraham wrote it and Akiva organized it into its current form. Jewish tradition claims the Kabbalah began with Adam, then passed to Noah and Abraham, who was called “the friend of God.”

A manuscript in the British Museum refers to the Sefer Yetzirah as Hilkhot Yetzirah and describes it as secret knowledge only for the truly pious.

The Sefer Yetzirah exists in many manuscripts, usually grouped into four categories:

• The Short Version,
• The Long Version,
• The Saadia Version, and
• The Gra Version.

The long version includes paragraphs not in the short version, and its arrangement often changes the meaning. The short version has about 1,300 words and was annotated by Dunash ibn Tamim. It was the basis for the first printed Hebrew edition in Mantua in 1562 and most later editions. The long version has 2,500 words and includes a commentary by Shabbethai Donnolo. It is often printed with this commentary as an appendix to the short version. In the 13th century, Abraham Abulafia noted the existence of both versions.

The 1562 Mantua edition included the short version with commentaries by Abraham ben David (on the outside of the page), Nachmanides (at the bottom of the page), and Moses Botarel (on the inside of the page). Botarel’s commentary followed the first two rabbis and collected earlier commentaries. An appendix included commentaries by Eleazar of Worms (on the outside of pages) and Saadia Gaon (on the inside of pages). The long version was printed at the end of the book.

In the 16th century, Moses Cordovero, a leader of the Safed Kabbalah school, created a working text based on ten manuscripts. His student Isaac Luria later revised it to align with the Zohar. In the 18th century, the Vilna Gaon, known as “the Gra,” further revised it. This version is called the Gra or ARI-Gra edition.

In the 10th century, Saadia Gaon wrote a commentary based on a reorganized copy of the longer version, now called the “Saadia Version.” This version was translated into French by Lambert and then into English by Scott Thompson. Unlike other mystical texts, this version focused more on philosophy than mysticism and had little influence on later Kabbalists.

Influence

The Sefer Yetzirah is a book that discusses ideas about how God created the world. It is believed to have been written by Abraham, a biblical leader, which shows how highly respected it was for many years. Some people think this book had a bigger impact on Jewish thinking than most other books after the Talmud was completed.

The Sefer Yetzirah is very hard to understand because of its unclear writing style. This difficulty is made worse by the lack of a clear, official version of the text. The current version has many changes and additions over time, which has led to many different opinions about the book’s age, origin, content, and importance.

The study of the Sefer Yetzirah is one of the most interesting topics in Jewish literature. Except for the Bible, few other books have been written about so many times with notes and explanations.

There is a close connection between the Sefer Yetzirah and later Jewish mystics. Although the later Kabbalah (a system of Jewish mysticism) is different from the Sefer Yetzirah (for example, the Kabbalah’s sefirot do not match those in the Sefer Yetzirah), the ideas in the Sefer Yetzirah were the first clear step in the development of Kabbalistic thought. Both works suggest that God created the world through a series of steps between Himself and the universe, rather than creating it directly from nothing. Both also describe God as the starting point of creation, not the direct cause of the world.

Another book with the same name was shared among the Ashkenazi Hasidim (a Jewish group) between the 11th and 13th centuries. This book became an important source for Practical Kabbalah, a type of Jewish mysticism. It seems to focus on the six days of creation and shares some similarities with a short religious text called Seder Rabbah deBereshit.

Charles Stansfeld Jones wrote about this book in his work The Anatomy of The Body of God. He explained its ideas from the perspective of Thelema, a religious movement started by Aleister Crowley in the early 20th century.

Teachings

The Sefer Yetzirah explains how the universe was created by the "God of Israel" (the book begins by listing all of God’s Hebrew names) using "32 wondrous ways of wisdom." These include:

• Ten Numbers (sefirot), which later influenced Kabbalah.
• Twenty-two Letters of the Hebrew Alphabet, divided into:
• Three mother letters: Aleph, Mem, Shin.
• Seven double letters: Bet, Gimel, Dalet, Kaph, Pe, Resh, Taw.
• Twelve simple letters: He, Waw, Zayin, Heth, Teth, Yodh, Lamedh, Nun, Samekh, Ayin, Tsade, Qoph.

The book describes how the ten sefirot and twenty-two letters can be used to gain divine insight through Abraham’s teachings. It also mentions that God’s covenant with Abraham had two parts.

The study of language is discussed first because it helps understand the book’s philosophical ideas. The twenty-two letters are classified based on how they are produced by the vocal organs and the strength of their sounds. Unlike Jewish grammarians, who believed each group of sounds had a unique way of being made, the Sefer Yetzirah states that no sound can be made without the tongue, which works with other speech organs. The letters are formed in these ways:
– With the tip of the tongue and throat.
– Between the lips and the tip of the tongue.
– In the middle of the tongue.
– By the tip of the tongue.
– By the tongue, which is flat and stretched, and by the teeth.

Letters are also grouped by the strength of their sounds:
– Mutes, like Mem, which make no sound.
– Sibilants, like Shin, called the "hissing shin."
– Aspirates, like Aleph, called the "airy Aleph," which balances between mutes and sibilants.

In addition to the three "mother" letters, the seven "double" letters can make two different sounds, while the twelve "simple" letters each make only one sound.

The book views both the universe (macrocosm) and humans (microcosm) as results of combining and arranging these letters. Jewish use of letters for sacred purposes, such as forming the Holy Name, is mentioned in ancient magical texts that reference an "Angelic Book of Moses," which includes biblical names.

The Sefer Yetzirah’s language theories are central to its philosophy, which also includes astrology and Gnostic ideas about the universe’s creation. The three mother letters—Aleph, Mem, Shin—are not only the basis of the alphabet but also symbols for the three primordial elements: water, fire, and air (ruach).

According to the book, the first creation from God’s spirit was ruach (air), which produced water, which then created fire. These elements existed only as possibilities until the letters Aleph, Mem, and Shin gave them real form. The cosmos is divided into three parts: the world, the year (or time), and humans. Each part contains the same three elements. Water formed the earth, fire created the heavens, and air filled the space between. The three seasons—winter, summer, and the rainy season—mirror water, fire, and air, just as humans have a head (fire), torso (air), and body parts (water).

The seven double letters are linked to the seven planets, the seven days of the week, and the seven openings in the human body (eyes, ears, nostrils, mouth). These letters change between hard and soft sounds, just as planets move closer or farther from Earth. The seven days of the week are connected to the letters because they change over time, like the planets. The seven openings in the body connect humans to the world, just as planets connect the heavens and Earth.

The twelve simple letters are used to create the twelve zodiac signs, which are linked to the twelve months of the year and twelve internal body parts (hands, feet, kidneys, gall, intestines, stomach, liver, pancreas, and spleen). These body parts work independently and are influenced by the zodiac signs.

Matter in the cosmos is made of the three primordial elements, which are not chemically joined but physically affect each other. Power comes from the seven planets and twelve zodiac signs. The "dragon" represents the world (matter and planets), the "sphere" represents time, and the "heart" represents the human body. The author summarizes this as: "The dragon is like a king on his throne, the sphere like a king traveling, and the heart like a king at war."

To match the Genesis story of creation from nothing (creatio ex nihilo) with the idea of primordial elements, the Sefer Yetzirah describes two types of creation: one ideal and one real.

The ten sefirot are not real things but abstract ideas, like numbers that show relationships between objects. Just as numbers 2 to 10 come from 1, the ten sefirot come from one source. They are not physical creations but changes in God’s will, which first becomes air, then water, and finally fire. The sefirot are God’s will in different forms.

The twenty-two letters are real and form the material world. They are the creative forces behind all existence. These letters made the physical world, turning the ideal sefirot into real things. This idea connects to a Talmudic teaching that God created the world using letters (Berakhot 58a). However, the exact relationship between the twenty-two letters and ten sefirot is unclear.

The first sentence of the book says: "Thirty-two paths, marvels of wisdom, hath God engraved…" These paths are the ten sefirot and twenty-two letters. The sefirot are called "abstracts," while the letters are described as "drawn, hewed, combined, weighed, interchanged" by God to create everything.

Influence

In 2002, American mathematician Robert P. C. de Marrais gave the name "pathions" to a type of 32-dimensional hypercomplex numbers. This name was inspired by the 32 paths of wisdom described in the Sefer Yetzirah.

Editions and translations

• Sefer Yetzirah (in Hebrew). Mantua. 1562. Found on July 1, 2024 – through National Library of Israel.

• Sefer Yetzirah (in Hebrew). Amsterdam. 1642.

• Sefer Yetzirah (in Hebrew). Grodno. 1806 – through Hebrewbooks.org. Includes five commentaries.

• Sefer Yetzirah (in Hebrew). Warsaw. 1884. Publisher not specified. Includes nine commentaries.

• Goldschmidt, Lazarus, ed. (1894). Das Buch der Schöpfung (Sepher Jezirah). Critically edited text, translation, and commentary. Frankfurt am Main – through Hebrewbooks.org. Publisher not specified.

• Postell, Guillaume (1552). Abraham Patriarchœ Liber Iezirah (in Latin). Paris: Guillaume Postell.

• Pistor, Johann Ludwig (1587). "Liber de Creatione." Ars Cabalistica (in Latin). Basel: Conrad Waldkirch.

• Rittangel, Johann Stephan (1642). Sefer Yetzirah (in Latin). Amsterdam: Menasseh ben Israel.

• von Meyer, Johann Friedrich (1830). Das Buch Yezira (in German). Leipzig: F. A. Brockhaus.

• Kalisch, Isidor (1877). Sepher Yezirah: A Book on Creation; or the Jewish Metaphysics of Remote Antiquity. New York: L. H. Frank & Co. – through Hebrewbooks.org.

• Westcott, William Wynn (1887). Sepher Yezirah. London: Theosophical Publishing Society – through Sacred-texts.com.

• Kaplan, Aryeh (1991). "The Sefer Yetzirah: Short Version." Psyche.com. Found on July 1, 2024.

• Solomon, Avi (2024). "Book Of Creativity." Patreon.com. Found on January 1, 2026.

• Karppe, S. (1901). Etude sur les Origines et la Nature du Zohar (in French). Paris: Emile Bouillon. Pages 139–158.