FateThe witch sisters tell Macbeth that he will be the Thane of Cawdor and the King. This is basically the witches telling Macbeth his fate. He doesn't believe them at first but then moments later he is told that he is now the Thane of Cawdor due to the previous Thane of Cawdor being a traitor.
The witch sisters tell Macbeth his fate and he doesn't believe it
All hail, Macbeth! that shalt be king hereafter!
All hail, Macbeth! hail to thee, Thane of Cawdor!
Ross comes to tell Macbeth that he is now the Thane of Cawdor so now he starts to think that maybe he will actually be king
...And, for an earnest of greater honor, He bade me, from him, call thee Thane of Cawdor...