Oedipus Rex unconditional (Laius "will" have a son who will kill him). Both Aeschylus and Euripides write plays in which the oracle is conditional; Sophocles ... chooses to make Laius's oracle unconditional and thus removes culpability for his sins from Oedipus, for he could not have done other than what he did, no matter what action he took. This interpretation is supported by Jocasta's repetition of the oracle at lines 854–55: "Loxias declared that the king should be killed by/ his own son." In the Greek, Jocasta uses the verb "chrênai": "to be fated, necessary." This iteration of the oracle seems to
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