The Third Witch has the opportunity to portend the future. Like all the sets, she can command the winds. It is also very difficult to determine their sex because they have beards. The witch tells Macbeth that no man who was born from a woman can defeat him. By this prophecy, witches have assured Macbeth of his immortality, because at first glance it may seem that such a man does not exist. Throughout the play, no one knows how witches take their prophecies and their motives. Their actions can be regarded as ordinary fun, ruining the lives of mortal people.
Third Witch in the Essays