10 is the whole of the decimal system in compass—the number that closes the cycle of the first nine integers and simultaneously opens the next. In Hebrew, the numeral is written as Yod (י), the smallest letter of the alphabet, yet the one that begins the Tetragrammaton and contains the implicit fire of all that follows. Etymologically, ‘éser (“ten”) shares a root with ‘ósher (“wealth”) and ‘ashir (“rich”), linking the number to fullness, possession, and the concrete world that receives the outflow of the sephiroth. Because the decimal structure of the Sepher Yetzirah makes ten the number of the Malkuth—the Kingdom—10 stands both for the final Sephirah and for the principle of corporeal manifestation itself.

Position on the Tree of Life

The number 10 is assigned to the tenth Sephirah, Malkuth (The Kingdom), which occupies the lowest vertex of the Middle Pillar, directly beneath Yesod (Foundation). On the Tree of Life, Malkuth is the receiver of all the energies that descend from Kether through the nine upper sephiroth; it is the physical world, the “heel” of the Adam Kadmon, where the divine plan becomes tangible. As the terminal point of the Otz Chiim, 10 represents the end of the emanation process, the threshold between the sephirotic universe and the material realm known as Assiah (the World of Action).

Historical context

The first recorded Hebrew numeral system used the letters of the alphabet: Yod (י) = 10. In the biblical books of Genesis and Exodus, the number ten appears repeatedly: the ten utterances by which the world was created, the ten plagues of Egypt, the Ten Commandments. By the time of the Sepher Yetzirah (c. 3rd–6th centuries CE), ten had been fixed as the count of the Sefirot Belimah—the “ten intimates without measure”—and the anonymous author asserts that these ten correspond to the decimal structure of the human body: “Ten fingers, five opposite five, and the covenant of the sole one placed in the middle.”

Later, in the Zohar, the number ten (as Yod) was seen as the seed-point from which all other letters and worlds expand. The Renaissance kabbalist Rabbi Moses Cordovero systematised the ten sephiroth into three triads plus Malkuth, and his student, Rabbi Isaac Luria, taught that the number 10 is the minimal number of partzufim (divine configurations) required for the tikkun (restoration) of the shattered vessels. In the Hermetic Qabalah of the Golden Dawn, 10 retained its position as the number of Malkuth, and the 777 table by Aleister Crowley places the number 10 in the Key Scale column as the representation of the final Sephirah, accompanied by the divine name ADNI (Adonai) and the archangelic order of Ashim (Souls of Fire).

In table 777 at this step

In the Key Scale column of Liber 777, row 10, the number 10 itself is entered as the scale value for Malkuth. The adjacent columns give the divine name Adonai ha-Aretz; the archangel Sandolphon; the order of angels Ashim (Souls of Fire); the Hebraic name Malkuth; and the planet Earth (as the element of Earth). In the Sepher Yetzirah tradition, the number 10 also correlates with the Hebrew letter Yod—the seed-letter of creation. The entire row thus makes 10 the hinge between the abstract numbering of the sephiroth and the material world that the user of the table seeks to index: it is the number that ends the chain of emanation and begins the chain of measurement.