Sophocles use of language allows his characters to show what is going on inside them to the reader. Many works of literature deal with what happens to a person physically and the resulting consequences. Many do deal with the issues that a person endures internally as a result of physical actions. In Sophocles work the events that take place in the human mind are the catalysts that drive on the story, the greatest events are not when an action happens but when the characters come to terms with what has transpired.
The greatest realization faced by a character is that of Oedipus who for many years has come to terms with his situation. The Prophet Apollos predictions that he will kill his father and have sex with his mother. The course of his life is shaped by this prophecy. What Oedipus has been told from the beginning of his life shaped his thinking, this also allows the reader to grasp that this myth is relevant to their lives. The physical actions of Oedipus are the results of a man with high principles and probing intelligence. The story can be separated into points where Oedipus gathers more information about himself. The ignorance that Oedipus faces is the foundation he was brought up by. He has believed that he lived with his birth mother and father and therefore when he learns of Apollos prophecy he leaves home so that it cannot come true. Slowly as the story progresses Oedipus discovers bits and pieces of his true-life story, as Oedipus learns that he killed Laius by the story of the shepherd. He continues on his journey to discovering the truth. When he pieces together what he has done he cannot face himself. The chorus best shows his true emotions
People of Thebes, my countrymen, look on Oedipus.
He solved the famous riddle with his brilliance,
He rose to power a man beyond all power.
Who could behold his greatness without envy?
Now what a Black Sea of terror has overwhelmed him.
Now as we keep our watch and wait the final day,
Count no man happy till he dies, free of pain at last
The Chorus is the voice of the reader showing the moral lesson that is learned from the long told story Sophocles is borrowing from.
The change is Oedipus over his reign on earth from the cursed son of royalty to a hideous monster that brought forth a curse on his village the voyage that the reader takes in only In the mind of Oedipus not in his form.