Against doctor's orders (because of current health problems) and with some difficulty I felt this deserved a response.
I really hate to say this - and please forgive me if I am over-simplifying, it reminds me of a printing company that had a lot of expectations that it published to the world, and when these expectations weren't fulfilled, they frantically moved the goal-posts around and over-complicated something that should be straight-forward.
You've been hit on the head so many times by the Watchtower, you are confusing the evolution of human society in general with a cult that sets dates for the end of the world and has to keep revising things when things don't materialize as they promise.
The Jews did not begin with the Bible. Solomon's Temple had fallen and the Jews were in Babylonian exile before the Hebrew Scriptures began to be redacted into the shape you see today. We did not get our history or religion or theology or so-called prophecy from these Scriptures. Nor are the Scriptures a book of Jewish history nor is there any such thing as "Bible prophecy" such as Christian believe.
Jews have changed their understanding on things over the 4,000 plus years our culture has existed because our culture is 4,000 plus years old. Evolution is real. We evolved like biological evolution teaches, Judaism teaches that itself must evolve, and we evolve like society does in ways of science, philosophy, mores, etc.
Jews themselves have spent 5000 yrs trying to crystallise the meanings of their own writings...
Uh, no. We didn't base our society or culture or our religion on our writings. That would mean the writings came first. Sorry, but our religion and society came first. These books didn't just write themselves or float down out of the sky or were found buried in upstate New York (sorry Cold Steel). The Davidic dynasty had fallen, we were captives in Babylon, and then we began to write the Bible.
We never set any dates for the end of the world. Never told the world to read our own books. Didn't even write our Scriptures for anyone else but ourselves. Never expected non-Jews to translate them and make up their religions based on them. And we definitely didn't have any "goal posts" set out that we've been having to move around.
I think you are still seeing things through Watchtower-colored glasses. May I suggest you not only remove them but drop them, stomp on them, and burn them.
Now, if you still want to imagine that the Jews based their religion on the Bible as you have suggested, please explain to everyone how a book written by Jews got written before there was Jews. We say that our culture and religion was about to die, and so we began to write these texts in order to preserve these things while we were captives in Babylon without homeland, without temple.
You are too used to the Watchtower lie that religion must be based on Scripture. The real truth is that Scripture is based on religion. Religion came first. Groups that say religions must be based on books are liars.
Now excuse me, my head is buzzing and I need to lie down for three months.