The witches presence is essential to the play Macbeth. It is these unnatural beings that tempt Macbeth with their prophecy. Though their malicious intentions are clear, they cannot be blamed for the actions Macbeth took later in the play. Simply because they appealed to Macbeth's desire to be king, baiting him but never instructing him to take any action. As with their admitted desire to create havoc by trapping him , they also included warnings in their prophecy about the consequences any actions could have ( Banquo's sons shall be kings). …
