Well Arabs aren’t all Muslims and Palestinians are Levantines not Arabs.
The Canaanites were a mix of Arab, Hamite, Turanid, Persian and S European.
Today’s Palestinians and Lebanese are up to a 95% match for the same ancestry as the Canaanites. Today’s Britons are at most a 35% match for the Britons from 50AD.
So Palestinians concocted Judaism and Christianity before embracing Islam. The Arabs departed about a thousand years ago when the Crusaders took over.
I leave history rewriting to IgnorantFookin’Twats like yourself. A million dollars says you can’t disprove anything I have said! Good luck!