The weird sisters play an important role in Macbeth. They make suggestions to Macbeth about the future however they do not force him to commit any of his monstrous actions and this will be argued with reference to Macbeth as a whole. In the opening sequence the witches believe "what foul is fair and what's fair is foul" and they predict macbeths imminent arrival. Using their powers of foresight they hail Macbeth "all hail thane of glamis" then "hail thane of cawdor". For their final prediction hail