How can the answer be improved?
I grant him bloody,
Luxurious, avaricious, false, deceitful,
Sudden, malicious, smacking of every sin
That has a name: but there's no bottom, none,
In my voluptuousness: your wives, your daughters,
Your matrons and your maids, could not fill up
The cistern of my lust, and my desire
All continent impediments would o'erbear
That did oppose my will: better Macbeth
Than such an one to reign.
No Fear Shakespeare: Macbeth: Act 1, Scene 1
Macbeth breathes a sigh of relief with #2 and #3, since those are obviously impossible situations and mean that he's effectively safe. The one about Macduff has him a little worried, though, so he kills off Macduff's family. Naturally.
Macbeth is named king and things are Prophecies fulfilled! Except, wait. Macbeth starts to worry about the witch's prophecy that Banquo's heirs will be kings. Macbeth's not about to let someone bump him off the throne so, he hires some hit-men to take care of Banquo and his son, the unfortunately named Fleance. Banquo is murdered, but Fleance escapes.