Judaism, Christianity, and Islam, the three major monotheistic religions, all originated in what is known today as the Arab World. If they all believe in one god, then they must all believe it is the same god. Then all that is left are man’s machinations that created all the different ways of worshipping the one god that defines your beliefs.
It is these thousands of beliefs and practices and the impossibility of justifying them that creates all of the tension.
