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John Wesley reported on Albert Einstein's "Theory of Religion".
Perhaps Albert would disagree with you?
I don't think that "theory" , whatever it may be, made it into the peer-reviewed physics literature, which is what he was qualified to comment on scientifically. And are you sure Albert called it a "theory"? That sounds more like someone trying to come up with a clever title when talking about Einstein's thoughts on religion. Scientists are generally more careful in their terminology.