Why did pedipus have to send twice for tiresias?

Oedipus sent for Tiresias twice because he initially dismissed the prophet's insights when Tiresias first arrived, not wanting to confront the harsh truths about his own actions and the murder of King Laius. After realizing that Tiresias possessed crucial knowledge about the plague afflicting Thebes, Oedipus sought him out again, compelled to uncover the truth despite his reluctance. This repeated summons underscores Oedipus's struggle between his desire for knowledge and his fear of the consequences of that knowledge.