Historical Jesus, Biblical Jesus

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If ever it could be proven that all he was was some man and not some god it would destroy Christianity as we know it today. You will never convince Christians that Jesus was a myth because there's no evidence to work with.

But if you can get enough evidence together and correlate it to show a mere human being, heads are going to roll because you actually do have evidence.

That's pretty much a fool's errand. 
There is no way you could "prove to a believer that a Jesus existed, but he wasn't a god". 
You have never proposed a way to do this.

I have been proposing the way to do this for years, repeatedly.

With "HISTORY."