What attempt does Jocasta make during Oedipus's conversation with the Messenger?

Jocasta's attempt during the conversation with the Messenger reflects her desperate need to protect Oedipus from the painful truth of his origins and the prophecy. By wanting to stop the Messenger from sharing information, Jocasta demonstrates her awareness of the tragic reality that is unfolding. She fears that the Messenger's revelations about Oedipus's past will confirm the horrifying prophecy that foretold the prophecy of Oedipus killing his father and marrying his mother.

Jocasta's maternal instincts and her protective nature drive her to intervene at this critical moment, as she believes that by silencing the Messenger, she can shield Oedipus from the impending doom of knowledge that could lead to his downfall. This act is a pivotal moment in the play, illustrating her deep emotional struggle and the lengths a parent will go to for their child, even when it leads to further tragedy. Her intervention is ultimately futile, as the truth of Oedipus's identity and fate cannot be avoided.