In your opinion what causes christians to believe in Jesus

[Sheldon]

...by clipping small pieces of text....

Right. Because you're a master at packing multiple assumptions and conditionals into every proposition—and then nesting those premises within other propositions.

And I'm trained to isolate variables and examine them one at a time.

No, you clearly clipped a tiny part of a question, to remove the context, and evade answering what I'd actually asked. No big deal, I mean I am holding a loaded deck, as you're trying to defend erroneous claims that are at odds with scientific facts, and pretending that science validates them. 

Bottom line, a young earth is as compelling as a flat earth, and for the same reason.