'pour my spirits in thine ear'
Lady Macbeth is going to try and convince her husband to murder King Duncan. She will do this by ‘pouring her spirits in thine ear’, which makes a reference to Shakespeare’s play ‘Hamlet’ in which Hamlet’s father is killed when he is sleeping via poison through the ear. Lady Macbeth knows that her husband will be against the idea of killing Duncan and that it will take some convincing to make him see her side. She will talk him into by putting her ideas into his head and with a clever argument directed at his weaknesses, knowing that this is the only way to get him to agree with her plan. This again highlights the strength of their relationship and the way that they know each other so well.