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.