Yesod

Yesod means foundation. It is the 9th sphere of the Kabbalah Tree of Life.

Number: Nine

Titles: The Foundation; Eternal Foundation of the World

Divine Names: Shaddai (The Almighty); El Chai (Mighty Living One)

Archangel: Gabriel

Angelic Order: Cherubim

Archdemon: Lilith (The Seducer)

Demonic Order: Gamaliel (The Obscene Ones)

Heavenly Sphere: Moon

Part of Man: Genitals

Reference
Wikipedia Yesod