The first scene of Macbeth establishes the following:
- establishes the theme of "time": "when shall we three meet again?"
- establishes the importance of the "heath": a place of carnage, full of "foul and filthy air," foreshadowing the bloody events to come
- establishes the witches as agents of chaos, seemingly controlling the actions and events of play much like a chorus
- creates an atmosphere of the supernatural, mystery, and the occult
- pathetic fallacy: the outside weather (stormy) mirrors the interior weather of the Macbeths (murderous)
- the motif of "three": three witches, "thunder, lightning, rain"
- the language of confusion in the witches' equivocations (language of confusion; ambiguity; double meanings; half-truths; paradoxes; riddles: “Foul is fair and fair is foul”)
- subverts the natural order (God, King, and nature as all good) with equivocal morality: how do we know what’s good, or who’s good, if there’s overlap between good and evil?