I.vii is the last scene in Act I. Macbeth is talking to himself about why it is wrong to kill the king. He knows that it is a bad thing to do, especially because he is the host and Duncan trusts him. Lady Macbeth enters and scolds him for being a coward and says that he is not brave enough to be a man. She works out how they are going to kill Duncan, and convinces Macbeth to do it.