"In Hebrew literature the idea of reincarnation seems to appear for the first time in the writings of Anan ben David (eighth century) who used the term gulgul to refer to the transmigration of souls. Within Judaism, belief in reincarnation is closely associate with esoteric tradition known as Kabbalah. The earliest documented Kabbalistic writing is called the Book of Formation (Sepher Yetzirah)...Within this tradition of Judaism, the primary text that describes the complex laws of reincarnation is The Gate of Reincarnations (Sha’ar Ha’Gilgulim), based on the writings of the master Kabbalist Rabbi Isaac Luria (1534-72) and compiled by his disciple, Rabbi Chaim Vital. The Book of Splendor (Sepher ha Zohar) gives a rationale for reincarnation that is virtually identical to that of early Christian theologian Origen."