The Witchy Roots of Macbeth: A Look at the Three Weird Sisters

When shall we three meet again / In thunder, lightning, or in rain? The play begins with them. Before Macbeth has spoken a word, before we know anything about the political situation in Scotland, before the murder has been contemplated — the witches are already there, already planning, already weaving the threads of a fate that will destroy a king and a kingdom. They are the first thing we encounter in Macbeth, and they are never entirely absent from it.

The Three Weird Sisters are among the most compelling figures in all of Shakespeare. They are also among the most misunderstood. They are not simply villains. They are not simply plot devices. They are something stranger and more interesting: figures who stand at the intersection of fate and free will, prophecy and agency, the human and the inhuman.

The Word "Weird": Its Original Meaning

The word weird has changed its meaning considerably since Shakespeare's time. In the early modern period, weird — from the Old English wyrd — meant fate or destiny. The Weird Sisters are not simply strange women. They are the Sisters of Fate — figures analogous to the Norse Norns or the Greek Moirai, the three goddesses who spin, measure, and cut the thread of human life.

This etymology matters because it changes how we understand their role in the play. The Weird Sisters do not create Macbeth's fate. They reveal it. Or do they? This is the question that Macbeth never quite answers, and the ambiguity is the point.

The Folkloric Background

Shakespeare drew on a rich tradition of witch lore for his Weird Sisters. The early modern period was the height of the European witch trials — between 1450 and 1750, somewhere between 40,000 and 60,000 people were executed for witchcraft across Europe, the vast majority of them women. The witch was a figure of genuine cultural terror: a woman who had made a pact with the devil, who could curse livestock and cause illness and control the weather.

Shakespeare's witches draw on this tradition but also on older, pre-Christian sources. Their association with fate, their ability to see the future, their ambiguous gender — "You should be women, / And yet your beards forbid me to interpret / That you are so" — all suggest figures from a mythological tradition older than Christianity.

King James I, who came to the English throne in 1603 and for whom Macbeth was likely written, was obsessed with witchcraft. He had personally supervised the torture of accused witches in Scotland and had written a treatise on the subject, Daemonologie, in 1597. Shakespeare's witches were, in part, a compliment to his patron's interests.

What the Witches Actually Say

The witches' prophecies are famously ambiguous. They tell Macbeth he will be Thane of Cawdor and then King of Scotland. They tell Banquo that he will be lesser than Macbeth but greater, not so happy yet much happier, and that his descendants will be kings. They tell Macbeth to beware Macduff, that no man born of woman can harm him, and that he will not be defeated until Birnam Wood comes to Dunsinane.

Every one of these prophecies is technically true and practically misleading. Macbeth becomes Thane of Cawdor and then King — but through murder. Banquo's descendants will be kings — but Banquo himself will be killed. Macbeth cannot be harmed by any man born of woman — but Macduff was "from his mother's womb / Untimely ripp'd," born by Caesarean section. Birnam Wood does come to Dunsinane — when Malcolm's soldiers cut branches to use as camouflage.

The witches do not lie. They simply tell truths that can only be understood in retrospect.

Fate, Free Will, and the Problem of Agency

The central question of Macbeth is whether Macbeth is fated to commit his crimes or whether he chooses them. The witches' prophecy tells him he will be king — but it does not tell him to kill Duncan. That is Macbeth's choice, made under the influence of his own ambition and his wife's persuasion.

Or is it? If the witches know the future, then the future is already determined. If it is already determined, then Macbeth's choice is an illusion. The play refuses to resolve this paradox, and the refusal is what makes it tragic rather than merely horrifying. Macbeth is not simply a villain. He is a man who may or may not have had a choice, and who will never know.

The Witches as Feminine Power

The Weird Sisters represent a form of power that the patriarchal world of the play cannot accommodate: knowledge without authority, prophecy without office, influence without position. They operate outside the structures of court and church and law. They answer to no one. They cannot be arrested or executed or silenced — they simply vanish into the air.

In a play about the violent seizure of power, the witches are the only figures who are never threatened. They are already beyond the reach of the world they observe. There is something deeply satisfying about this.

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