What significant event does the second messenger announce?

The second messenger's announcement that Jocasta has died is crucial to the development of the plot and Oedipus's character arc. This event serves as a turning point for Oedipus, as it not only highlights the tragic consequences of his quest for the truth but also emphasizes the themes of fate and free will that permeate the play. Jocasta's death follows the revelation of Oedipus's true identity and his horrific actions, leading to a deep sense of loss and sorrow.

The impact of this announcement is profound, as it illustrates the emotional and psychological turmoil Oedipus experiences upon learning the truth about his own past and how it has led to his present suffering. The death of Jocasta compounds the tragedy of the situation, showcasing the devastating effects of fate and the inescapability of prophecy, which are central elements of the narrative. Therefore, this event not only signifies the end of Jocasta's involvement in the story but also serves as a climax for Oedipus's tragic downfall.