Prophecy misleads Macbeth into believing he is invincible suggests that no human being can harm him. Prophecy plays on Macbeth's arrogance and false sense of security. Ambiguity of Witches language is a key aspect of manipulative power, as gives Macbeth a false confidence hiding true meaning of their words. Foreshadows his eventual downfall as Macduff is born by caesarean section who ultimately defeats him.
"When shall we three meet again/ In thunder, lightning or in rain?"
Introduces supernatural and chaotic tone of the play. Evokes images of darkness, turmoil and natural disturbances, reflecting ominous and malevolent influence of the witches. Sets stage for their role as agents of chaos, foreshadows, the disruption and disorder that will follow. Closely associated with dark forces of nature, meeting under stormy conditions reflect alignment with evil.
"Fair is foul and foul is fair."
Paradoxical statement embodies theme of appearence vs reality, as suggests that what seems good is actually bad and vice versa. Witches use this phrase to highlight moral confusion that occurs during the play. Foreshadows betrayal that characters like Macbeth experience as they pursue power. Line also reflects the Witches manipulation of truth, as they blur boundaries between what is good and evil. Central to influence over Macbeth
"All hailMacbeth, thou shalt be king hereafter."
Prophecy sets Macbeth's ambition into motion, as Witches plant the idea of becoming king in his mind. Greeting mimics a royal salutation. Gives Macbeth a glimpse of his future, Witches manipulate him into taking drastic actions to fulfil the prophecy. Manipulates Macbeth's perception of reality, begins to believe that he is entitled to the throne