Some Kabbalistic Numerology

"Ten Sefirot out of nothing, twenty-two foundation letters, three mothers, seven doubles and twelve simples. Ten Sefirot out of nothing. ten and not nine, ten and not eleven. Alef, Mem, Shin are signed in six rings and enveloped in male and female. Twelve simples: He, Vav, Zayin; Chet, Tet, Yod; Lamed, Nun, Samech; Ayin, Tsadeh, Qof. Twelve simples: He, Vav, Zayin; Het, Tet, Yod; Lamed, Nun, Samech; Ayin, Tsadeh, Qof. Twelve and not eleven, twelve and not thirteen.

Understand in Wisdom and be wise in Understanding. The universe is calculated according to ten: the three are fire, air, and water; the seven are the seven planets; the twelve are the twelve signs of the zodiac." (Kabbalah Before the Law)