Assuming the historicity of Jesus, and I do, I wonder how well he knew his real father, whether it was Joseph, Pantera or another man. Because he MUST have existed for Jesus to have been born - you know, the sweet meeting of sperm & egg .
It appears though that no factual information can be gleaned from the Bible or other sources about this but of course that hasn't prevented much speculation.
If, as seems likely, Jesus father was absent what effect would that have had on the young child? Or perhaps Jesus father actually played down his identity and worked - along with others - to indoctrinate the impressionable young mind of his son into accepting the so called Divine nature of his being and his identity as the Christ!
They say truth is stranger than fiction but I guess we'll never know . . .