It was a very crafted mythology to suite a purpose. There were and are many "jesuses". None more special than anyone else. But it makes a great division tactic. When we have to be saved it creates a classic disruption in the psyche. This fuels fear. This makes one easily controlled.
The bible is more about the hidden metaphors of a cult that uses occult knowledge to leverage control.
All the rest is speculation and unimportant.
We save ourselves when we come away from limited beliefs and begin to tap our infinite potential beyond the snares.
The "holy" trinity is very different than what your average christian has been told.