Short answer. The Tree of Life (Hebrew ilan, "tree") is the diagram Kabbalists use to arrange the ten Sefirot (the graded powers through which the hidden God acts) into three vertical columns joined by connecting paths. It is a map of how the Infinite reaches a finite world, read downward as emanation and upward as ascent. The doctrine of the Sefirot is twelfth- and thirteenth-century; the drawn tree, in the branching form most people picture, is substantially later, and the version reproduced in modern occult books carries a nineteenth-century layer on top of that. This page keeps those three strata apart.
The ten Sefirot and the three pillars
The Tree's vertical logic is a balance. The right-hand column (Chokhmah (wisdom), Chesed (loving-kindness), Netzach (endurance)) is the pillar of expansion and mercy. The left (Binah (understanding), Gevurah (severity), Hod (majesty)) is the pillar of restriction and judgement. Between them runs the middle column, from Keter (crown) down through Tiferet (beauty) and Yesod (foundation) to Malkhut (kingdom), and its work is reconciliation: it holds the two sides in a tension neither can win.
That is the whole moral architecture in one image, and it is why the diagram outlived its own tradition. Mercy unchecked dissolves; severity unchecked destroys; the centre is where a world can actually stand. Malkhut, at the foot, is also identified with the Shekhinah, the indwelling presence, so the lowest point of the descent is the point at which God is nearest, which is a deliberate inversion and not an accident of the drawing.
Where the diagram actually comes from
Here is the honest flag, because popular sources routinely get it wrong. The concept of ten Sefirot arranged in a structure is firmly medieval: it is worked out in the Sefer ha-Bahir (late twelfth century, Provence), in the Gerona circle, and above all in the Zohar (late thirteenth-century Castile). But the Zohar does not contain a diagram. Its imagery for the Sefirot is arboreal and anthropomorphic (a tree, a body, a figure) in words, not in lines and circles.
Drawn ilanot appear in Kabbalistic manuscripts from roughly the fourteenth century onward, and they are far more varied than the single canonical tree of modern reproduction: scholars working on this material find a whole family of divergent designs rather than one authorised chart (J. H. Chajes, The Kabbalistic Tree, 2022, on the manuscript tradition of ilanot). The image that fixed one arrangement in the European mind is a printed one, the woodcut frontispiece of Portae Lucis (Augsburg, 1516), Paulus Ricius's Latin rendering of Joseph Gikatilla's Sha'arei Orah, showing a bearded figure holding a tree of ten linked spheres.
Sixteenth-century Safed then produced two competing systematisations that a diagram has to choose between: Moses Cordovero's, set out in Pardes Rimmonim (1548), and the Lurianic system of Isaac Luria as transmitted by Chaim Vital, where the Sefirot are recast as partzufim, configured "faces," and the plain ten-circle tree becomes an inadequate summary of a far more dynamic system.
The twenty-two paths and the thirty-two paths of wisdom
The lines joining the circles are usually numbered twenty-two, one for each letter of the Hebrew alphabet, giving the familiar total of thirty-two: ten Sefirot plus twenty-two letters. That total is genuinely ancient in the tradition. Sefer Yetzirah opens by declaring that God engraved the world in "thirty-two wondrous paths of wisdom": ten sefirot belimah and the twenty-two foundational letters.
Two cautions belong here, and they are the kind a careful reader wants. First, sefirot in Sefer Yetzirah does not yet mean what it means in the Zohar; the word there is closer to "numbers" or "ciphers": primordial numerical dimensions, not the personified divine attributes of later Kabbalah (A. P. Hayman, Sefer Yesira: Edition, Translation and Text-Critical Commentary, 2004). Second, the thirty-two of Sefer Yetzirah is an inventory, not a picture: the specific assignment of each letter to a specific connecting line between two named Sefirot is a later harmonisation, and different traditions assign them differently.
Da'at, and why some trees have eleven circles
Count the circles on two different trees and you can get two different answers, which unsettles readers who expect a fixed chart. The usual explanation is Da'at ("knowledge"), drawn as a dotted or hollow circle on the middle pillar below Keter. Da'at is not an eleventh Sefirah. It is better understood as the point where the first three Sefirot become available lower down, the place Keter occupies when Keter itself is treated as too hidden to be counted among the ten. Lurianic and later Hasidic thought, Chabad especially, make heavy use of it. A tree showing both Keter and Da'at as solid circles is not following the classical convention.
The modern occult tree is a real tradition, a different one
Most English-language readers meet the Tree through Hermetic and occult books, with the twenty-two paths labelled by tarot trumps and astrological signs. That system is coherent and has its own long history, but it is not medieval Jewish Kabbalah, and the difference should be visible rather than blurred.
Its lineage runs through Christian Kabbalah from the Renaissance onward: Pico della Mirandola, Reuchlin, and later Athanasius Kircher, whose Oedipus Aegyptiacus (1652-54) contains the tree arrangement that modern occultism generally follows. The pairing of the twenty-two trumps with the twenty-two letters was popularised by Éliphas Lévi in the mid-nineteenth century, and the detailed correspondences most books reproduce were fixed by the Hermetic Order of the Golden Dawn at the end of that century. That is roughly six hundred years after the Zohar. Both traditions are worth study; the claim that the tarot attributions are ancient Jewish teaching is the part that does not survive contact with the sources.
Reading the Tree up as well as down
One structural point is easy to miss. The Tree is drawn as a descent (Keter to Malkhut, Infinite to world) but Kabbalists read it in both directions, and the upward reading is where the practice lives. Prayer, intention (kavvanah), and right action are held to move something along the same channels the light came down. That is what makes tikkun intelligible as more than metaphor within the system: if the map has two directions, human action has somewhere to go.
It also explains the Tree's durability outside Judaism. A diagram that maps mercy against severity, holds them with a reconciling middle, and lets you trace a path back up is portable in a way a doctrine is not, which is exactly why it travelled, and exactly why its history has to be stated carefully.
Common questions
Is the Tree of Life in the Bible?
Not in the Kabbalistic sense. The tree of life (etz ha-chayim) of Genesis 2:9 and Proverbs 3:18 is a scriptural image the Kabbalists borrowed the name from; the diagram of ten Sefirot in three columns is a medieval and early-modern development that reads that phrase back onto its own structure. The name is biblical, the chart is not.
How many Sefirot are on the Tree of Life?
Ten. Trees showing eleven circles are marking Da'at (knowledge), which is not an eleventh Sefirah but the place the highest Sefirot become available further down the middle pillar, generally drawn dotted or hollow for exactly that reason. Da'at appears when Keter is treated as too hidden to be counted among the ten, so the total stays at ten either way.
What are the three pillars of the Tree of Life?
The right-hand pillar of mercy and expansion (Chokhmah, Chesed, Netzach), the left-hand pillar of severity and restriction (Binah, Gevurah, Hod), and the middle pillar of balance (Keter, Tiferet, Yesod, Malkhut). The moral claim built into the layout is that neither side is meant to win: the centre exists because unchecked mercy dissolves and unchecked severity destroys.
Are the tarot correspondences on the Tree traditional Kabbalah?
No. Assigning the twenty-two tarot trumps to the twenty-two paths is a nineteenth-century development, popularised by Éliphas Lévi and systematised by the Hermetic Order of the Golden Dawn, resting on a Christian-Kabbalistic arrangement of the Tree associated with Athanasius Kircher's Oedipus Aegyptiacus (1652-54). It is a real and coherent tradition with its own history; it is roughly six centuries later than the Zohar and is not what medieval Jewish Kabbalists were doing.
Does the Zohar contain a drawing of the Tree of Life?
No. The Zohar describes the Sefirot in arboreal and bodily imagery in words, but it carries no diagram. Drawn ilanot appear in Kabbalistic manuscripts from roughly the fourteenth century, in many divergent designs rather than one standard chart, and the arrangement that fixed itself in European print is the 1516 Portae Lucis woodcut.
This page treats the Tree of Life as three layers that are usually collapsed into one: a medieval doctrine of ten Sefirot, an early-modern drawing convention that fixed one arrangement in print, and a nineteenth-century occult system of tarot and astrological correspondences laid over the top. All three are real; only the first is what the Zohar taught.
Sources
Gershom Scholem, Major Trends in Jewish Mysticism (1941) and Kabbalah (1974); Moshe Idel, Kabbalah: New Perspectives (1988); J. H. Chajes, The Kabbalistic Tree (2022), on the manuscript tradition of ilanot; A. P. Hayman, Sefer Yesira: Edition, Translation and Text-Critical Commentary (2004); Joseph Gikatilla, Sha'arei Orah, in Paulus Ricius's Latin Portae Lucis (Augsburg, 1516); Moses Cordovero, Pardes Rimmonim (1548); Daniel C. Matt, The Zohar: Pritzker Edition (2004-2017).