The tragic downfall of Macbeth was not determined by one single cause. It was rather caused by a combination of three dark forces: supernatural, external and internal. The three witches represent supernatural forces and dark powers behind them. Lady Macbeth is an outer force that pushes Macbeth towards the bloody deeds. Macbeth's own ambition acts as deciding power in brining him to his downfall.
The very beginning of the play indicates that dark supernatural forces will be involved. Three weird sisters are preparing a surprise for Macbeth, surprise that will eventually cost him life and the salvation of his soul. Witches' predictions play very important role in leading Macbeth to the evil deeds. Witches are the first to unleash Macbeth's "black and deep desires" by promising him crown in the near future. …
