"We shall proceed no further in this business."
Lady Macbeth tells Macbeth to hide his emotions and actions.
That she would give up her child if it is need
she tells him to go bleep and blop
Lady Macbeth exhibits peculiar behavior as she sleepwalks and tries to wash imaginary blood off her hands, revealing her internal guilt and remorse over the murders she and Macbeth committed. The gentlewoman is instructed to observe and report Lady Macbeth's actions but not to interfere.
Macbeth kills the grooms so they cannot tell the others the truth.
Lady Macbeth is not involved in the plan to kill Banquo because the decision to murder Banquo is made by Macbeth alone. Macbeth wants to keep Lady Macbeth out of this particular act of violence to protect her from its consequences and to shield her from the guilt associated with the murder of their former friend. Additionally, Macbeth wants to keep the full extent of his plans hidden from Lady Macbeth to prevent her from being implicated or becoming a target of suspicion.
Lady Macbeth tells the guests that this is just a strange habit Macbeth has. "Think of this, good peers, But as a thing of custom. 'Tis no other; Only it spoils the pleasure of the time."
She rings a bell. Macbeth says, "the bell invites me. Hear it not Duncan for it is a knell that summons thee to heaven or to hell."
"Go get some water, and wash this filthy witness from your hand." In other words, she is trying to distract him.
Macbeth wants to keep his plans for Banquo's murder a secret from Lady Macbeth in order to protect her innocence and shield her from the guilt associated with the crime. He also wants to maintain his power and control over the situation without involving her. Additionally, Macbeth may fear that Lady Macbeth would try to dissuade him from pursuing the murder, as she has shown signs of moral conflict and guilt in the past.
Macbeth is startled when the witches give him their prophecies of his future. However, they did not tell him how to accomplish these prophecies, so he madly and erratically takes things into his own hands with the help of Lady Macbeth.
He told her about the three prophecies that he has been told by the witches. Thane of Cawdor, Thane of Glamis, and King of Scotland.