I believe that Jesus Christ is my saviour; Muslims believe he was just a prophet, and Jews believe that he was a false prophet. How can we possibly find common ground-- the kind where we could get together and worship God fully and completely?
I wanted to free associate with this a bit. You're raising an interesting point: assuming there are significant differences in the Christian/Muslim G-d concept, does it matter as far as religious practice? Could it be a difference that makes no difference?
... I'm not a Muslim, so I can't speak for Islam. And I'm not Jewish, so I can't speak for Judaism. I was raised a Catholic and I don't recall a single sermon telling us that practicing Catholics were supposed to worship Jesus. In fact, Jesus was rarely mentioned at all.
If Jesus was supposed to be such an important issue differentiating Christian religious views from nonChristian, you'd think the Church would emphasize Jesus' importance more. But again, in the course of my Catholic upbringing we were never told to worship Jesus. The Church never said to worship the Holy spirit or the Trinity, either. A differentiated G-d concept apparently was not seen as important to worshiping G-d "fully and completely."
Postmaster wrote: "you come to a forum like this to find answers and you only make more questions and your original questions are still left unanswered." To which Juantoo3 responded: "The more I learn, the less I know!" I think the key to saving time on a forum like this is to make a determination about relevance. As far as a differentiated G-d concept (i.e., Trinitarian doctrine), I personally think it's interesting and kind of helpful. But it seems Jesus and his divinity didn't matter enough for the Church to deliver an occasional sermon about him. If Jesus doesn't really matter to the Church, why would a differentiated G-d concept matter to anyone else?
I don't think Church theologians spend a lot of time thinking about whether the Christian G-d is the same as the Muslim G-d, either. I may be wrong about that. Is there an official church position? Is there an official "Christian" position on the so-called "Muslim G-d"? Whose position would be considered here? The Pope's? Billy Graham's? Pat Robertson's? James Dobson's?