In Arab countries government ≠ people in the country
Even if some Arab countries establish friendship and peace treaties with Israel, this doesn't mean that the people agree
Nearly 95% of the Arab people - at least - oppose Israel and support Palestine , this is inherited in the collective consciousness of Arabs
Most Arab governments are corrupt, and their people need to rise again and change their mentalities before they reach the stage where they solve their problems and choose rulers and/or parliament representatives who will actually represent them
The question of Palestine, for both Palestinians and Arabs, is a legal and cultural issue , the Zionists came from all over the world to own a land that was not theirs in the first place, land isn't the only thing they stole but also food (
1,
2,
3 ) and clothes ( some originally Palestinian clothing was registered Internationally as Israeli.) in order to create forged civilizational/cultural identity and history for themselves , they also committed massacres and daisplaced the Palestinian from their villages ( such as
Tantura and
Deir Yassin)
The only" religious " part of the issue as far as I know is the Islamic-Jewish dispute over Al-Aqsa Mosque, where the Muslims consider it its own , while the Zionists think that the Temple of Solomon might be underneath it , except that, all Palestinians who oppose Israel suffer regardless of their religion: Muslims Christians or Samaritans , that's why I personally think it's more of a legal/cultural issue