Sophocles establishes a relationship between prophecy and destiny and he elaborates upon this idea by making them distinct and yet, perfectly intertwined, to the point where the first one becomes the latter.
In Sophocles’ play, it is well known, Oedipus is vanished from his kingdom at birth in order to prevent the horrible prophecy from becoming true —marrying his mother and killing his father. Despite all attempts at securing this, the prophecy becomes Oedipus´ destiny as he, haphazardly, slays his father and then marries his mother.