According to Jewish Religious scholar Shai Cherry, biblical-era and early first temple Judaism did not have any well formed concept of an afterlife. An afterlife is barely mentioned in the Hebrew bible, other than a couple obscure references to the underworld of Sheol. The pre-Rabbinic emphasis was on how to live life in this world.
After the Greeks acquired hegemony in the Levant and Near East, late second temple Judaism and Rabbinic Judaism acquired a definite concept of a resection and an immortal soul which migrates to a divine realm after death, as a reward for a life of righteousness..
^^ This is straight out of Plato's Republic.
The Jews were undoubtedly incorporating some Platonic philosophy as the Greeks Hellenized those parts of the Near East.
After the Greeks acquired hegemony in the Levant and Near East, late second temple Judaism and Rabbinic Judaism acquired a definite concept of a resection and an immortal soul which migrates to a divine realm after death, as a reward for a life of righteousness..
^^ This is straight out of Plato's Republic.
The Jews were undoubtedly incorporating some Platonic philosophy as the Greeks Hellenized those parts of the Near East.