Oedipus of Theban plays by Sophocles: "Oedipus Rex", "Oedipus at Colonus", and "Antigone". Oedipus was the son of Laius and Jocasta, king and queen of Thebes. Having been childless for some time, Laius consulted the Oracle of Apollo at Delphi. The Oracle prophesied that any son born to Laius would kill him. In an attempt to prevent this prophecy's fulfillment, when Jocasta indeed bore a son, Laius had his ankles pierced and tethered together so that he could not crawl; Jocasta then gave the boy to a servant to abandon ("expose") on the nearby mountain. However, rather than leave the child
Oedipus Rex drunken guest on the other hand: you are not your father's son defines Polybus as only a foster father to Oedipus. The two wordings support each other and point to the "two set of parents" alternative. Thus the question of two set of parents, biological and foster, is raised. Oedipus's reaction to the Oracle is irrational: he states he did not get any answer and he flees in a direction away from Corinth, showing that he firmly believed at the time that Polybus and Merope are his real parents. "The scene with the drunken guest constitutes the end of Oedipus'