What 4 things do the witches show Macbeth? What does each show say? What is Macbeths reaction?

1) an armed head

2) a bloody child

3) a crowned child holding a tree

4) eight kings, trailed by the ghost of Banquo

Macbeth is shown that Macduff will not be harmed by anyone born of a woman, and that Macduff would not be beaten until Birnam Wood came to Dunsinane. He also learns that it is Banquo's descendants which will be kings.

To correct the previous answer, it is Macbeth who will not be harmed by anyone born of a woman and Macbeth that will not be beaten until Birnam Wood came to Dunsinane (all of which happen). He was told of Banquo's descendants being kings at the beginning of the story.