What does Who thou art mayst never know mean in Oedipus Rex play?

In the play "Oedipus Rex" by Sophocles, the phrase "Who thou art mayst never know" refers to the tragic irony that Oedipus is unaware of his own identity and his relationship to the people around him. Oedipus is the protagonist of the play and is initially portrayed as a strong, wise, and just ruler of Thebes. However, as the play progresses, it is revealed that Oedipus has unknowingly committed patricide and incest. This revelation leads to his downfall and ultimately to his self-blinding.

The phrase "Who thou art mayst never know" highlights the tragic nature of Oedipus's situation and his ignorance of the truth. Despite his intelligence and power, Oedipus is unable to see the reality of his own life and the consequences of his actions. This blindness leads to his downfall and ultimately to the destruction of his family and kingdom.