How does Sophocles use foreshadowing to hint at Oedipus's downfall in Oedipus Rex?

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hint at 's downfall through the prophet . Whencomes back from the oracle at Delphi with the news
that the plague in Thebes will end when Laius's murderer is brought to justice, Tiresias is
reluctant to speak. He first tells Oedipus that it's just as well if he doesn't tell him what he
knows. This communicates the uneasy possibility that whatever Tiresias has to say, it will not
be good news for Oedipus.

When Oedipus insists that Tiresias speak, Tiresias
still doesn't name Oedipus outright at first; he hints that the person responsible for
the...