There is a thought that Jesus was created to lure pagan sun worshippers into the church, the sun/son of god.
Asking for evidence anything supernatural is unreasonable, because "evidence" is by definition observable, and the only things that could potentially qualify as evidence of the supernatural would be that which lacks a natural explanation, and anything but yet explainable is simply qualified as " not yet understood". It is an intentionally disingenuous request.
By the way, claiming that the present existence of self replicating cells is, in and of itself, proof that self replicating cells can originate from non-self-replicating matter is a massive logical fallacy. It would be akin to claiming that the presence of a cake in my house is proof that I baked it. It intentionally discounts the possibility of any other source by insisting that the method it's existence supposedly proves is the only possible option. That is poor logic, and poor science.
That's why I don't believe it. But does it matter? You believe a molecule can self replicate from non genetic material. That's like believing in the spaghetti monster.
Your analogy is flawed. At the time of the big bang, there were no bits of anything that make up the bits of matter. So there could be no self replicating molecules. Now there are these molecules. Something happened between now and then to make them. It wasn't "god."
Why wasn't it? The existence of matter is not proof of the big bang, only proof that the matter had some source. Why can't that source be God?
It's unreasonable to ask for evidence of anything supernatural because it isn't a coherent concept. On the other hand I can trivially think of hypothetical evidence that would indicate life on earth was created by a superior being of some kind.