Okay so I had a thought, many religions are founded on the idea that a god created the universe and entities to inhabit it.
What if "God" was in-fact once a living person, whom himself question his mortality and existence.
And questioned what happens when a person dies, where do they go, for instance.
Having decided on what he deemed an acceptable response, set out on a journey to spread his word and detailing his journey within a book.
This would sort of be in line with the concept of God, Jesus H. Christ and the holy spirit.
Religion isn't exactly trying to prove a point but more offer an answer to an otherwise impossible question.
Views have changed since the times of René Descartes, whom questioned his own existence and suggested "cogito ergo sum", I think therefore I am, the simple notion that because he thinks about his existence he must exist to do so.
Or even Ancient Greece, where people believed that the Sun was led by Apollo and his golden chariot.
For a long time people didn't understand how these things worked, so they make up reasons that were thought to be suitable.