I respect religons, and the promised land is valid for both Hebrews and Christians, since those passages on both religons sacred books are very similar (hence the reason there are a large interest of the Christian churchs being present in Jerusalem). For muslims, is the third most important place if I'm not mistaken, so almost every religion wants a piece of it tbh.
But the promised land was all about hope: Jews were expatriates, and if you were born jew in the egyptian empire days you would be basically almost at the same level as a slave. Times were tough and hope was needed. In the long term, it created a beautiful symbiose between hebrews arround the world, as the jew communities were very strong and unite.
But with the arise of extremist nationalist ideologies in the 19th century, things that were made with good intentions can easilly turn into extremist ideas, hence zionism.
Nowadays is not even about that anymore: it's more about national pride form both sides: on one hand you have a small group of elite Israelis who feel entitled and are in power positions to make decisions, on the other hand you have Hamas, who started as a poitical movement and ended up being funded by far right elite arabs and mix religion in bewtween. Unless there are profound changes on both sides leadrships, this conflict will never cess.