The meeting of the witches where they decide on whats going to happen to macbeth. in this case its he will be king. "all hail macbeth that shalt be king hereafter"- third witch
Duncan is thankful to Macbeth for his service however Duncan was very trustworthy and a fool, and during this praise off king Duncan "my worthy crawdor" Macbeth and Lady Macbeth were plotting the murder of King Duncan.
Macbeth has killed King Duncan at this point "i have done the deed" he said to lady Macbeth.Macbeth felt slightly gulity and said he couldnt pray or sleep anymore "i could not say amen"
After Duncan's murder Macbeth started thinking hes going to die if he admits so he carries son killing. he next killed banqo as he was the good guy / hero and suspected Macbeth as the kings murder. banqos ghost appears and makes Macbeth very anxious" tis thee without, than he within"
Lady Macduff and her son speak about Macduff and how he was a traitor and that we didnt need men. "how will you do for a husband" " ay he was"
After the witches exclamed that Macbeth couldn't be killed by women born he still wanted to kill Macduff however he had fled the country so he decided to kill Macduffs family "to make him flee the land"" what you egg" ( whilst stabbing him)