Oedipus Rex reveals the prophecy which caused him to leave Corinth (791-93): "that I was fated to lie with my mother," "and show to daylight an accursed breed" "which men would not endure, and I was doomed" "to be murderer of the father that begot me." The implication of Laius's oracle is ambiguous. One interpretation considers that the presentation of Laius's oracle in this play differs from that found in Aeschylus's Oedipus trilogy produced in 467 BC. Helaine Smith argues: Sophocles had the option of making the oracle to Laius conditional ("if" Laius has a son, that son will kill him) or
Oedipus Rex many Greek myths, and similarities to Oedipus can for example be seen in the myth of the birth of Perseus. Two oracles in particular dominate the plot of "Oedipus Rex". In lines 711 to 714, Jocasta relates the prophecy that was told to Laius before the birth of Oedipus. Namely: "(The oracle) told him" "that it was his fate that he should die a victim" "at the hands of his own son, a son to be born" "of Laius and me." The oracle told to Laius tells only of the patricide; the incest is missing. Prompted by Jocasta's recollection, Oedipus