This is not as well known as you think, IMO a lot of Christians do not in fact know or believe this to be true, especially regarding Islam.....I have made that point to numerous Christians who express disbelief or get mad even at the suggestion that Muslims worship the same god as they do.....Regarding what I bolded: This is 100% false. From where did you get that info? Judaism is the first monotheistic religion. Actually, Judaism, Christianity, and Islam, the three major monotheistic religions, all believe in and worship the same almighty creator. I assume most people know this from basic history, even if they aren't a member of any of these three religions.