The main symbol from what you have shown of the passage is light. Oedipus wants to see the light one last time, meaning either the good side of a fight or he is dying. You will need to add more of the passage for a clear answer
This is the climax of Fourth Episode of Oedipus the King.
Explanation:
Because, Oedipus was the man that prophecy talked, and when he knew, during a time he escaped from that, until he realise that he doesn't have more choice that fulfil his destiny.