Macbeth went to see the witches for more prophecies, and three apparitions rose from the caldron, and told him his fate. The first one was an armed head, and it told him to watch out for macduff. Macbeth then took percaution.
"Whate'er thou art, for thy good caution, thanks"(4.1.83)
"Macduff; what need I fear of thee? But yet I'll make assurance double sure"(4.1.93-94)
The second apparition was a bloody child and it said that someone who was born from a woman can not harm him. This puzzles Macbeth because he thought everyone was born from a woman.
"For none of woman born shall harm Macbeth"(4.1.90-91)
The last apparition is a crowned child holding a tree and he says that he cant be harmed unless Great Birnam Wood goes up to his home. Macbeth thinks he has nothing to worry about because it is impossible.
"That will never be. who can impress the forest, bid the tree Unfix his earthbound root"(4.1.108-110)
"Macbeth shall never vanquished be until Great Birnam Wood to high Dunsinane Hill Shall come against him"(4.1.104-106)
Macbeth sent murders to Macduffs home to kill his whole family since he himself was away in England. Macbeth did this because of what the first apparition said.
"He has killed me, mother. Run away, I pray you"(4.3.96-98)
"Young fry of treachery"(4.3.95)
Macbeth thought he was not able to be hurt by Macduff because of the second apparitions prophacy. But, Macduff was taken out of his mother's womb so he was able to kill him.
"which must not yield To one of woman born" (5.8.15-16)
"Tell thee Macduff was from his mother's womb Untimely ripped"(5.8.19-20)
A messenger tells Macbeth that the Birnam wood is coming, and he becomes upset. What the third apparition said he though was impossible, but it was becoming true.
"Liar and slave"(5.5.40)
"I looked toward Birnam Wood/ The Wood began to move"(5.5.38,40")