What do the three witches foretell in act one scene 3?

The three witches make several prophecies in Act 1, Scene 3 of William Shakespeare's "Macbeth." Here are some of the key predictions:

1. The witches greet Macbeth with the titles "Thane of Glamis," "Thane of Cawdor," and "King hereafter," foreshadowing his rise to power.

2. They tell Banquo that he will father a line of kings, though he will not be king himself.

3. The witches vanish into thin air, leaving Macbeth and Banquo bewildered and pondering the meaning of their prophecies.