What does Oedipus realize in the climax of

In the climax of Sophocles' play "Oedipus Rex", Oedipus realizes the tragic truth about his identity and his relationship with his parents. He discovers that he has unknowingly fulfilled a prophecy by killing his father, Laius, and marrying his mother, Jocasta. This realization brings immense pain and horror upon Oedipus, leading him to curse himself and condemn his own actions. The climax marks the turning point of the play, where Oedipus's tragic fate is revealed, and the consequences of his past choices come to light.