How about asking the same of Hindus, Muslims, and Jews? They'll say THEY'RE right. TRUTH is NO ONE knows the truth! NO ONE is right. The Bible, Koran, and all other religious writings are as true as the others, INCLUDING the Greeks former beliefs. There IS NO certainty in anything, only a guess. If you truly pay attention to the world around you, you could make the same "prophecies" that those writings do. It's not a prophecy so much as a well educated prediction. MAN wrote those books, NOT gods.