Jesus is not mentioned anywhere other than scriptures from hundreds of years after his supposed existence.

A bit off topic, but this is an exaggeration. There are several sources from the first century. That’s decades at most, not centuries. The letters of Paul and the gospels, obviously, but also Jewish historian Josephus and some Roman governor from somewhere in what is now Turkey I think. There is actually not that much debate among historians that Jesus existed. Whether or not you want to believe he was saving the world is another thing of course.

If you haven’t seen it yet, try Death and the Maiden (1994)