What are effects of the colon and dashes used in oedipus speech ???

Oedipus Rex in Greek mythology, is the king of Thebes who was responsible for killing his father and marrying his mother. His mother hanged herself when the truth of their relationship became public while he ruled till he died.

A colon often comes before an important item of information. The colon in Oedipus speech helped in introducing a proclamation and indicated a significant pause as he prepared to deliver important information to his audience . A dash was used for emphasis purpose.