The main theme of Oedipus The King is the power of fate and the consequences of disobedience. His parents King Laius and Queen Jocasta got to know about the horrible fate of their son who was doomed to kill his father and marry his own mother. Oedipus was given to a servant who had to kill the child. But the servant hesitated and Oedipus remained alive. He was brought up in another kingdom by a childless couple. His new parents decided not to tell him about his real origin, but the forecast hunted him and finally, he got to know that he had to become the killer of his father and the husband of his mother. Oedipus decided to deceive fate and left his home and the people whom he considered to be his real parents. On his way to another kingdom, he met a man and killed him. Then he came to the kingdom and was proclaimed a new king who had to marry a widowed queen. Poor Oedipus did not know that the man he killed on the road was his father Laius and the woman he married was his mother Jocasta. They lived in sinful marriage for several years and several children were born. Finally, Oedipus wanted to find out who had killed the previous king Laius. The forecasters said that it was him and told him the truth about his birth. Jocasta committed suicide and Oedipus plunged pins into his own eyes and left his kingdom forever. His attempt to struggle with his fate failed as fate is more powerful than men. His tragic destiny continued after his death because his children also suffered as it was depicted in the tragedy “Antigone” (Hall).
Hall, E. “Introduction”. Sophocles: Antigone, Oedipus the King, Electra. Oxford University Press, 1994, pp. xix–xxii.