Bereshit ("Works of Creation") and Ma'aseh Merkabah ("Works of the Divine Throne/Chariot") clearly indicate the Midrashic nature of these speculations; they are really based upon Genesis 1 and Book of Ezekiel 1:4–28; while the names Sitrei Torah (Hidden aspects of the Torah) (Talmud Hag. 13a) and Razei Torah (Torah secrets) (