Hekhalot Zutartey ("Lesser Palaces" or "Palaces Minor"), which details an ascent of Rabbi Akiva; Hekhalot Rabbati ("Greater Palaces" or "Palaces Major"), or Pirkei Hekhalot, which details an ascent of Rabbi Ishmael; Maaseh Merkabah ("Account of the Chariot"), a collection of hymns recited by the "descenders" and heard during their ascent; Merkavah Rabba ("The great Chariot"): Sepher Hekhalot ("Book of Palaces," also known as 3 Enoch)