The stupid thing is that Judaism, Christianity and Islam are all Abrahamic religions, with far too much in common to claim that they aren't but just like siblings, they can disagree ALL THE EFFING TIME.
You're right- Muslims didn't always fight for revenge- at first, they were the aggressors with "Join, or die" with some being allowed to live, but suffering heavy taxation. They deny details in the other two because they say their interpretations are incorrect, even though Muhammad wasn't born until more than 500 years after Christ and a couple of hundred years after the New Testament.
How many need to die in the name of religion?
Christianity teaches that Jesus was 'King of the Jews'. A bit ironic, I think, that they found so many reasons to hate Jews as much as they have. I was raised Catholic but haven't practiced in more than 50 years- I can't align myself with the BS they caused/created and perpetuate. Shiites and Sunni Muslims fight to the death, Jews, Muslims and Christians do the same and many are actually related, but hatred is stronger than blood.