This is insane conspiracy theory nonsense, and is also not how actual Jews read the Tanakh.
(Which is also not referred to as "the Book", since it's a collection of books. This may seem like a nitpick, but I think is indicative of you getting your information from non-Jewish conspiracy theorist circles rather than anything related to Jewish theology or culture.)
Try to resist the temptation to lump me in with the conspiracy theorists. If you can, provide facts. Thanks for your nuance about the Books. I was using the terminology I learned for the Bible (which also consists of multiple Books, but is referred to as the Book), but I'm happy to switch to "scripture".
The Dati Leumi, the Religious Zionists, who constitute the ideological backbone of the settler movement, and have a lot of political influence in Israel, absolutely believe in their duty to govern the biblical land. For many, holding the West Bank is a religious obligation, and they consider the Golan settled and annexed. Religiously, the same principle that justifies them holding Golan applies to these territories.
Here are some recent statements from political leaders:
Bezalel Smotrich (Finance Minister, Religious Zionist party) "it is written that the future of Jerusalem is to expand to Damascus."
Daniella Weiss (prominent settler leader) said in 2024: "We know from the Bible that the real borders of Greater Israel are the Euphrates and the Nile."
Benjamin Netanyahu said he's on a "historic and spiritual mission" and that he is "very" attached to the vision of Greater Israel, which includes Palestinian areas and possibly also places that are part of Jordan, Egypt, Syria, and Lebanon.
Yair Lapid, the secular centrist opposition leader (!). "I don't think I have a dispute on the biblical level about what the original borders of Israel are... I support anything that will allow the Jews a big, vast, strong land."
Mike Huckabee (US Ambassador to Israel) "It would be fine if they took it all."
I agree with you for the most part. But we aren't talking about the ordinary spiritual Jews or Christians or Muslims. We are talking about religious fundamentalists who have a very distorted view of their religion, and mix it with identity politics. Israeli-right religious fundamentalists have captured full power in Israel, and are now even threatening their own democracy. Don't forget that the Likud party that Netanyahu leads was once a terrorist organisation in its previous avatar, that used to do Hamas like massacre of Palestinians and assassinate Israeli leaders that didn't subscribe to their ideology and wanted peace with Palestine. Indeed, if the Israelis were freed of these religious fundamentalist leaders peace is very likely. (The Terrorist Forefathers of Israel: The Irgun and Lehi - https://dissidentvoice.org/2023/03/the-terrorist-forefathers... ) .