Bellflower, so you’re telling a Jewish Israeli who I happen to know went to Yeshiva and probably has a giant bulk of the Tanakh and Talmud memorized — in Hebrew — and wrote out, by hand, at least one book — in Hebrew — he needs to read the Tanakh?
No, but perhaps you do. The “old” testament (the Tanakh) is but a fraction of the scriptures. Sure, certain things like eternal life and whatnot are alluded to. But the actual doctrines are contained in the TALMUD, the oral law.
This was why the Sadducee (who were “Sad, you see”) did not believe in resurrection — they rejected the Talmud and relied only on the Tanakh (or even just the Torah — the first books -— depending on which sect)
This conflict is written about extensively in your religions own additions to the Jewish scriptures, with your messiah coming out squarely on the side of the authority of the oral law.
It sounds like you are the one who needs a refresher.
Isaiah 26:19 Thy dead men shall live, together with my dead body shall they arise. Awake and sing, ye that dwell in dust: for thy dew is as the dew of herbs, and the earth shall cast out the dead.
Job 19:25 For I know that my redeemer liveth, and that he shall stand at the latter day upon the earth: 26 And though after my skin worms destroy this body, yet in my flesh shall I see God:
Daniel 12:1 And at that time shall Michael stand up, the great prince which standeth for the children of thy people: and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book. 2 And many of them that sleep in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt. 3 And they that be wise shall shine as the brightness of the firmament; and they that turn many to righteousness as the stars for ever and ever.
I Samuel 2:6 The LORD killeth, and maketh alive: he bringeth down to the grave, and bringeth up.
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Jesus Christ used a Scripture out of the Tanakh, a revelation from our Holy God speaking forth from the burning bush to Moses, to support His overriding belief in the resurrection, and the fact that people continue to exist after death:
Matthew 22:31 But as touching the resurrection of the dead, have ye not read that which was spoken unto you by God, saying, 32 I am the God of Abraham, and the God of Isaac, and the God of Jacob? God is not the God of the dead, but of the living. 33 And when the multitude heard this, they were astonished at his doctrine.