That ASBPersonally I suspect that you could see mass conversions to Christianity or Islam or abandoning religion altogether with the double atrocities of the Holocaust and losing Palestine.
It all depend on what exactly is the PoD but honestly in something any close to OTL scenario there a close to 0 probability for the Arab coalition to completely wipe Israel off the map and make Israel cease to exist you need an earlier PoD for that and by 67 and 73 Israel already at nuke so the chance of them stopping to exist is extremely low.The point of divergence cannot be before 1900 but can extend until the 1973 War. What if Israel ceased to exist? It can be done before it’s creation (ie no Balfour Declaration) or after its creation (losing any of the 1948, 1967, or 1973 wars). The only contingency is that the Holocaust cannot be butterflied away. Would the Jews remain in Palestine, find somewhere else to call a Jewish State, or head into a permanent diaspora without any hope of returning to the Holy Land?
Note: I do not condone any crimes against humanity or other atrocities. This is just an exercise about what could have been in history.
i think with a PoD that prevent the creation of Israel most of the Jews would remain in their home country at the time there won’t be big hostility between Arab and Jews and some would emigrate to United state . With a scenario were is Israel Is defeated and cease to exist in a very different 48 war it depend on what is exactly happen and the leadership of the principal winner but I could see the Hashemite trying to make a deal to let exist a small autonome jew region at the majority Jew coast doesn’t know for the Egyptian monarchy and a Arab republic state would probably completely expel them and in a scenario where Israel cease to exist after having been defeated there would still be some hostility against the Jew in the levant and Egypt for at least some decades (causing immigration to America) but the Jews in say Morocco Yemen and Tunisia should be fine .