Before this scene, we are told that the king Duncan hears good news about the Norway battle. On the way home from battle Macbeth and his best friend Banquo meet three witches who tell Macbeth that he will become king and will also become Thane of Cawdor but they also tell Macbeth he will not have an heir and that Banquo's son Fleance will become Macbeth's successor. Macbeth then writes a letter to his wife Lady Macbeth informing her of the witches' predictions the bravery Macbeth showed in the battle with Norway, led King Duncan to give him the honour of becoming Thane of Cawdor.
After act 1 scene 7 we know that Macbeth becomes king by murdering Duncan. Act 1 scene 7, is an important part of the play because in this scene Macbeth cannot control the fact that he does not know what to do. "First, as I am a kinsman and his subject, Strong both against the deed; then, as his host who should against his murderer shut the door, not bear the knife myself." Macbeth knows that he should not kill the King and he should be protecting him. But on the other hand he is a greedy man and he wants all power and to be able to do anything he wants.
Act 1, scene 7, shows us that Macbeth is weak mentally, and that his wife easily dominates him. Before this scene Macbeth was shown as a courageous and powerful warrior. We also come to see that Macbeth is greedy and power hungry. But also in this scene we see that Macbeth's conscience and his fear are haunting him, so