What is the function of the chorus in "Oedipus Rex" ?its role in Greek Drama

The chorus functions as a calming effect upon the
characters. Also, the chorus acts a reiteration of important
events.

The chorus acts as a revelation to what the
audience is thinking. The chorus is the epitomy of common sense by breaking down the
actions of the characters.

The chorus acts as a
foreshadowing device. Also, the chorus reveals things about the characters that the
characters themselves are trying to hide.

The audience
depends upon the chorus to reveal truths that may not be exposed by the characters
thoughts and actions.

The chorus helps the audience know
what the characters may be thinking.

Without the chorus,
the audience would not have all the facts.

Overall, the
chorus asks important questions that cause the audience and the characters to think more
deeply.