Interestingly, in Sophocles play Oedipus Rex, he skillfully portrays his views about human limitations. For example, his play character Oedipus, couldn't outrun the prophecy that says he <em>would end up killing his father and marrying his mother</em>, which brought disaster to his city and family.
Looking deep into the play we could observe that the play emphasizes on the popular belief in destiny, <em>implying that no matter one's status prophecy (destiny) will not change.</em>
just look it up on on the internet, then it should take you to the correct page. I hope u find it! also if you read that entire thing into the voice thing it'll take you straight to the question itself.