According to the Zohar, Hekalot is the seven halls of the world of Yetsirah, the divine halls into which the seekers of the Chariot (Merkabah) strive to enter. Here dwell the angels, presided over by Metatron; likewise the souls of men not specially noted for their piety. (The souls of the pious dwell in the world of Beriah). A.G.H.
Spence, Lewis, An Encyclopedia of Occultism, New York, Carol Publishing Group Edition, 1996, p. 205