The way you speak of the characters in your story shows what you think of the values of conservatives‚ or evolution, for example. It shows where your moral center is. So you are in the message business whether you like it or not.
He's [Jesus] the most fascinating character in history, really - the character who's made more difference to the world than anyone since him. I daresay that Muslims would say Muhammad was that character, but I think Jesus had a sort of 600-year start on him.