Question for Jews of a theistic perspective: why isn't Olam Ha-Ba addressed in the Torah or the early Tanakh, especially when death is frequently described as anything but Olam Ha-Ba?
Now, I know that Daniel and Nehemiah frequently discuss both the resurrection and the world to come, but, stemming from an earlier perspective in the Tanakh, there isn't any mention of it essentially whatsoever. The answers I've been able to glean from the tzadikim and various scholars and such seems to be kind of lost: the Torah was revealed in stages so it didn't mention it, the Torah focuses on life so it didn't mention it, the Torah doesn't want to tempt performing the mitzvot with reward in the afterlife because that cheapens the worship of HaShem.
That's all very well and good, but in the Kohelet, in Samuel, in the Torah, you see mention of death. Death is almost singularly described as Sheol, as a place where the voice of HaShem doesn't penetrate, where there are no words of worship to the Lord, where all is gray and black. Either it's a physical place with a spiritual state of existence that's so divorced from consciousness that it might as well be the death of annihilation of consciousness as understood by most atheists, or it is that annihilation exactly. David's and Solomon's laments don't seem to call for hope, and the only calls for salvation from Sheol or praises for salvation from Sheol seem to be calls to save them from death, or praises for having saved them from death, not calls or praises from having saved them from Sheol as the place where every soul ends its journey to by deliverance to another post-mortem existence that is, in fact, an existence of any conscionable and definable sort.
Now, okay, I'm aware that Judaism has a litany of views on the afterlife, most of which inevitably boil down to "this world is more important than the next, and we ought to live a good life for the sake of a good life, whatever comes next is for God to know." I've certainly heard this especially from the reform and conservative sides of things. But I think it's fair to say that especially up until the modern era beginning in the 18th to 19th centuries, and even fairly into now, the normative orthodox view of the afterlife is resurrection as described by the later prophets of messianic proclivities, and as Olam Ha Ba, a place of conscious physical or spiritual existence that's very much an antithesis to the Sheol lemented for in the Kohelet.
I also know that the Mishnah and Talmud mention the Olam Ha Ba with more relative frequency and more relative affirmation than the written Torah does. And yet, I'm still left wondering: why doesn't the early Tanakh speak to Olam Ha Ba when it seems to specifically speak to the state of the body and soul after death as a defined concept which seems to be Sheol, and with no resolution or notable salvation in any form of what we know now as Olam Ha Ba?
I'd be very interested in answers from theistic and more orthodox Jews, and am fairly interested in theistic and non orthodox answers as well. It's a free world so I can't stop anyone being like haha bcs reLIEgion is dUMB and fAKE so I mean comment it if you want but you're annoying if you do. Would appreciate any attempts to tackle the question using extant traditions, source materials, and scholarly musings!