night's black agents

In the first part of act three there is a good reference to night that Macbeth says right before they kill Banquo. The line comes at the end of scene two Macbeth says “Light thickens and the crow makes wing to th’ rooky wood: good things of day begin to droop and drowse whiles night’s black agents to their preys do rouse”(126). This is saying the crows are heeding to the forest and the sun is going down and that the night is going to bring things. This come on the eve of killing Banquo so it must be noted that Macbeth can be seen as the night and the murderers are his black agents that are doing his work this also can be seen as a warning of what is about to happen the Macbeth at diner that night when he sees Banguo’s ghost in this case it is Banquo that is night’s black agents that is rousing it pray which in this case is Macbeth.