Step-by-step explanation:
King Laius received a prophecy from the oracle that he will have a son who will kill him and marry his wife, Queen Jocasta. In order to avoid this fate, King Laius had ordered his infant son to be killed by exposing him on a mountain.
The riddle of the Sphinx was as follows: "What walks on four legs in the morning, two legs at noon, and three legs in the evening?" The answer to the riddle is a human. In the morning, "four legs" represent crawling in infancy, at noon "two legs" represent walking on two feet (as adults), and in the evening "three legs" refer to the use of a cane or walking stick in old age.
To end the blight that had fallen on Thebes, Oedipus had to find and punish the killer of King Laius. He vowed to find the truth and bring justice to the city.
When Jocasta discovered Oedipus's true identity, she was devastated. She realized that she had married her own son and had children with him. Overwhelmed by the revelation, Jocasta hanged herself.
Oedipus's crime was unknowingly killing his own father, King Laius, and marrying his own mother, Queen Jocasta. When Oedipus learned the horrific truth, he was filled with guilt and disgust. In a fit of despair, he gouged out his own eyes as a form of punishment and exiled himself from Thebes.