In your opinion what causes christians to believe in Jesus

[Sheldon]

Not if it is pointless, no.

Good; the point is for you to illustrate what you're asking, namely what objective evidence of possibility entails. I'm glad we can now move forward with the scenario.

I don't need to illustrate it with pointless scenarios, it is perfectly clear what threshold I set, and why, and no one is obliged to share my standard for personal credulity. We will not be moving forward with your scenario, as it is pointless, and has no relevance to this thread or your claim, that you have now admitted you can't offer any objective evidence to support. 

The answer to the thread title, would likely differ among different believers, but as yet not one of them has cited any objective evidence as justification, and you have admitted you have none unless one presupposes a deity is possible, which I am not prepared to do, as I find that notion absurd, since I could believe literally anything was possible doing that.