Banquo and Macbeth. And the other witches, of course.
The witches told Macbeth that no man born from woman could kill him, but Macduff was born by Cesarean section meaning that he wasn't technically born naturally from woman.He is able to do it because the prophecies (one of which was "Beware Macduff!" as you will remember) are specially tailored to allow Macduff to be the one to kill Macbeth. The witches know full well that Macduff was "not of woman born" in the sense that he was delivered by Cesarian section, which is why they worded their prophecy that way.It's like saying "no American-born state governor will ever" do something. It helps if you know ahead of time than there is a state governor who is not American-born.
Two scenes in Macbeth start out with the witches. Which one are you talking about?
Macduff is the character who ultimately escapes death in Macbeth. He was not "of woman born" as foretold by the witches, and is able to defeat Macbeth in the final battle.
Banquo was able to see some of the witches' prophecies fulfilled, like the one about Macbeth becoming king. He was also aware, as he lay there dying with twenty trenched gashes in his head, that their prophecy about him not becoming the king looked like it was going to come true also.
Lennox tells Macbeth that he saw the witches vanish after delivering their prophecies, leaving him startled and amazed. He also informs Macbeth that Ross is within the castle and will soon be able to provide more information.
Actually, the 3 witches do not commit any acts of violence, in Macbeth. The Witches tell Macbeth of 3 prophesies, which make an enormous impact on him. The Witches represent darkness, chaos, turmoil, temptation and conflict. They manipulate Macbeth, to the point of not being able to recognize evil and good, and they not only venture to seek trouble and havoc for Macbeth but for all mortals. They never tell Macbeth to kill King Duncan but they use a subtle form of manipulation by tempting Macbeth with visions and prophecies that he is destined to be King. By manipulating him in this manner, the Witches are indirectly responsible for leading him to his own doom. The trouble they seek and set out to cause, is not their primary activity but they relish in their quest for trouble, and delight in helping mortals meet their doom.
He is the man not of woman born mentioned in the witches' prophecy, which is why they warned him to "beware Macduff". He is not born of woman because he was delivered by C-section. Apparently in order to be born you need to be born in the natural way.
You mean the story about the woman with the chestnuts, right? The witches were able to make her husband's life miserable, but were unable to kill him. The incident shows that they can be vindictive and punish someone far beyond the seriousness of the offence.
Believing in the witches, or maybe not believing in the witches enough. Being too easily persuaded by his wife. Lady M is able to goad him into the murder by attacking his sense of masculinity. Maybe his sense of masculinity is a flaw.
He will not be defeated until the Birnam wood marches to his castle.
To make sure that Banquo's son wont become king as the witches prediccted.