Yes, we both worship the God of Isaac, Jacob and Abraham. (Certainly, if you know the Old Testament, God was always disciplining the Israelites for everything from idolatry to...you name it...so certainly, not every Jewish person worships the God of Isaac, Jacob & Abraham. Jesus referenced the Pharisees in John 8, for example, of being of their father, the devil. So Jesus didn't take kindly to religious legalists).
How about the Catholics?
Yes, same God...same caveat as one of the Jews & Protestants, etc. IOW, can't vouch for every Catholic, Protestant or Jew out there...but generally, yes.
Mormons & Muslims?
Well, I get back to you on a post on that. But "No, I don't worship a glorified man who was never divine to begin with." And, "No, I don't worship any deity who was simply one member among many other gods as part of a divine 'council of gods.'"
Yes, we both worship the God of Isaac, Jacob and Abraham.
Jews don't believe that Jesus was the God of the Torah do they? Of course not. I also think that they had a penalty for people who claim that they do. Death. In fact, isn't that why they killed Jesus?
So no you can't believe in the same God the Jews do can you? And if you aren't a Catholic you can't believe in their God either. The same for any of the different religions. Do you understand or is this too confusing?