Act 2: The Gates of Hell

     In Act 2 Scene 3, the porter of Macbeth's castle compares the door of the castle to the gates of hell.  The night of Duncan's murder, Bangui and Lennox come knocking on Macbeth's door and wakes the porter. The porter hears the knocking and thinks it sounds like demons and imagines dead people living in the castle. It makes since that he said that since Duncan's murder happened in the castle which would later on change Scotland for the worse.The comparison signifies that Macbeth and Lady Macbeth have committed evil and are going to cause unfortunate events to occur.