[Mad Dawg]

I don’t think worshipping and having are the same thing. To suggest the distinction, I guess I would refer to, “Not everyone that saith unto me, ‘Lord, Lord,’ will enter into the kingdom of heaven, but he that doeth the will of my father which is in heaven.”

[Boogieman]

I don't know, I think the situation with the Muslims is a pretty clear analogue to the situation with the Jews who wanted to kill Jesus. They both think that they are worshiping the God of Abraham, but according to the standard Christ gave us, they are not, for how can they if they don't know Him?

Maybe it's just best to say they are under a delusion and leave it at that.