Shakespeare most likely uses the prophecy to set Macbeth's rise to power in motion to show that Macbeth is ambitious and superstitious, and that he was just waiting for a reason to get started.
<h3>Macbeth and the witches' prophecy</h3>
In the tragic play "Macbeth," Shakespeare uses three witches and their prophecy to set things in motion. Their ambiguous prophecy leads Macbeth to get started with his plans to become king.
Had Macbeth not believed the prophecy, nothing would have changed. The fact that he did believe it only shows that he is already an ambitious and superstitious man. All he needed was a reason - any reason - to take the throne for himself.
Learn more about "Macbeth" here:
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