“Your children shall be kings”

Macbeth is expected to be king of Scotland, and that Banquo’s sons will be kings. This can create conflict.

“Whence is that knocking?
How is ’t with me when every noise appeals me?”

After killing Duncan, Macbeth regrets killing him. He gets to crazy to the point were he thinks God is knocking on the paces door.

“Will all great Neptune’s ocean wash this blood
Clean from my hand? No, this my hand will rather”

Macbeth is saying that even the ocean can wash away his sins as he killed Duncan and has left him guilt.

(aside) “If chance will have me king, why, chance may crown me without my stir.”
Macbeth says here that his confidence raises because he states that if the witches want him to be king, then he is open for it.

“Stars, hide your fires!
Let not light see my black and deep desires.”

Macbeth has the King’s position in his eye sight. Which makes Macbeth in isolation. Therefore he speaks to Lady Macbeth (his wife) which persuades a sinful thought locked into his mind which is to take Duncan’s life away.