Zeus was a long standing cosmic diety. I don't believe anyone saw him as a god who was a man on earth. I would agree there is a long standing myth element to Jesus. There were myth elements added to a number of real people such as Alexander, Caesar, and Pythagoras. That was common to the Roman writings of the day. It would be equally possible they added myth elements to an historical Jesus in order to deify him. The OT is filled with cosmic myth combined with a touch of history. It was how they wrote. Osiris was the constellation Orion. Nimrod was Orion. Herod, an historical figure was also Orion.
"On Earth as it is in Heaven, the Cosmic Roots of the Bible" available on the Amazon.
