In the beginning of act scene 1, Banquo and Fleance are on the battlements talking about the time, when Fleance leaves, Macbeth approaches unseen. "Who's there?" Banquo requests, to which Macbeth replies "A friend." The fact that Macbeth replies with such an unclear response "A friend" suggests secrecy, dishonesty and maybe even future conflict.
Near the end of act 2 scene 1, Macbeth starts to hallucinate and become quite paranoid towards the audience because of all the pressure and talk about murdering king Duncan. Macbeth sees a dagger dripping with blood to which Macbeth replies, .
"And on thy blade and dungeon gouts of blood." .
Macbeth suggests "gouts of blood" meaning "supernatural evil", this is the dagger that he thinks he should use for the killing of king Duncan as Macbeth is unaware that this is just a hallucination and not reality. This conveys to me that Macbeth is very scared and on edge before he attempts to get rid of King Duncan, as Macbeth also states;.
"Hear not my steps, which way they walk.".
This implies to me that Macbeth doesn't want anyone to know where he is going so he can try to be seen as innocent.
In the beginning of act 2 scene 2 just after Macbeth has murdered King Duncan, Lady Macbeth has let the thought of becoming queen get to her and becomes very power hungry, which therefore creates an arrogant character especially towards Macbeth, as she suggests;.
"You do unbend your noble strength to think so brain sickly of things.".
This tells the audience that Lady Macbeth is basically telling Macbeth to stop stressing about the murder because he will make himself weak. She is telling him that what is done is done, don't look back just look towards the future. Lady Macbeth comes across very demanding at this stage in the play where she bluntly tells Macbeth to take back the daggers. Macbeth does not do as he is told as he seems very cowardly and ashamed of what he has done;.