The land promised to Abraham by his god (in exchange for exclusivity of worship) was “from the river of Egypt to the Euphrates”. In modern terms this includes not just Israel/Palestine, but Lebanon, Syria, Jordan, Kuwait, half of Iraq, a large part of Egypt, and an undefined part of Saudi Arabia. (You could even argue that it includes the entire Arabian peninsula, as falling within the coast between the Euphrates and Egypt.)
If you don’t think that fundamentalist Jews and Messianic Christians believe in such a massive expansion of Israel, look at this map on this website.
If you don’t think that the Arabs are aware of the fundamentalist Jewish vision, then look at this blog. This blog includes references to Jews claiming the full territory in the writings of Theodore Herzl and in 1947 testimony to the UN.
And notice that they are using the same map (misspelling ‘Caspian’, and showing Israel as including both Lebanon and the Sinai peninsula). How nice that they can agree about something.
Of course, only a very few Jews and Christians make these preposterous claims to own the whole “Promised Land”. Similarly, only a very few Muslims want to eradicate the state of Israel. Most people on both sides, as most people everywhere, simply want a better life for themselves and their children, and to feel that they are living in a fair and just world. As the bumper sticker says, “If you want peace, work for justice.”
It would be nice for Palestinian constitutions to renounce the idea of the eradication of Israel. Israel could show the way by renouncing, in its constitution, the idea of the Promised Land “from the river of Egypt to the Euphrates”.