Different cultures at different times believed different things about their deities.
Assuming that EVERYONE would see red colored Mars as a god of war or the morning star is a beautiful goddess does not lead to any truths. Assuming that the Egyptians of the 5th dynasty would have the same mores/laws/culture/deities as the Roman of 50 BC is a pretty bad stance to take, particularly when we have documents from both cultures that make it pretty clear that they held different beleifs.
-- Byrd
Moderator, Hall of Ma'at