The document discusses how the three witches confused Macbeth in Shakespeare's play. It notes that the witches correctly prophesied that Macbeth would become the Thane of Cawdor and Glamis. This led Macbeth to believe the third prophecy that he would become king, despite the horror he felt at the thought of murdering King Duncan to make this happen. The document explores how Macbeth's thoughts became increasingly negative and frightening as he contemplated fulfilling the witches' prophecy through regicide.