When Oedipus was grown up, he once went to a festival, where his proud manners so provoked one of his companions, that he taunted him with being only a foundling. Oedipus, seeing the frightened faces around him, now for the first time began to think that perhaps he had not been told the truth about his parentage. So he consulted an oracle.
Instead of giving him a plain answer,a thing which the oracles were seldom known to do,the voice said, “Oedipus, beware! You are doomed to kill your father, marry your mother, and bring destruction upon your native city!”