Why does Oedipus send Creon to the pythian oracle of Apollo?

Oedipus sends Creon to the Pythian oracle of Apollo to seek guidance on how to rid Thebes of the plague that has befallen the city. He hopes to uncover the cause of the suffering and find a solution to restore health and order. Oedipus believes that the oracle will provide divine insight into the nature of the crisis and the necessary actions to take. This decision underscores his commitment to his role as a leader and protector of his people.