Sin death and beyond

SIN, DEATH AND BEYOND: M.M.NINAN
The Ari also claims that if a purified soul has neglected some religious duties on earth, it must
return to the earthly life, and attaching itself to the soul of a living man, unite with it in order to
make good such neglect.
See http://www.gospeloutreach.net/soul_sleep_error.html
Because of its importance of this subject I quote several articles which I believe provide
additional insight below:
JEWISH AUTHORITIES SUCH AS SAADIA GAON CONDEMNED SUCH BELIEFS.
Saʻadiah ben Yosef Gaon (882-942 AD) of the tribe of Judah born in Egypt in the village of the ancient Pithom,was a
prominent rabbi, Jewish philosopher, and exegete of the Geonic period. The first important rabbinic figure to write extensively
in Arabic, he is considered the founder of Judeo-Arabic literature. He translated the Torah into Arabic.
The great Sage Saadia Gaon writes on Reincarnation in Emunoth veDeoth:
"Yet, I must say that I have found certain people, who call themselves Jews, professing the
doctrine of metempsychosis (reincarnation) which is designated by them as the theory of
“transmigration” of souls. What they mean thereby is that the spirit of Ruben is transferred to
Simon and afterwards to Levi and after that to Judah. Many of them would go so far as to
assert that the spirit of a human being might enter into the body of a beast or that of a beast
into the body of a human being, and other such nonsense and stupidities. This in itself,
however, indicates how very foolish they are.
For they take it for granted that the body of a man is capable of transforming the essence of
the soul so as to make of it a human soul, after having been the soul of a beast.
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