Extraordinary claims require extraordinary evidence. A Jewish preacher being the human incarnation of an all-powerful being, dying on a cross and being resurrected from the dead, is probably one of the most extraordinary claims ever made. But a collection of ancient documents like the Gospels is everything but extraordinary evidence.
In my opinion, documents like the gospels could never be sufficient to establish such an extraordinary claim beyond reasonable doubt. And this has nothing to do with a “bias towards naturalism”. I also don´t believe extraordinary claims which do not violate the laws of nature in any way, simply because an ancient document claims they happened.