Macbeth! Macbeth! Macbeth! Beware Macduff; / Beware the Thane of Fife.—
Act IV, Scene 1 · The Three Witches
Context
The first apparition, an armed head, warns Macbeth to beware of Macduff by repeating Macbeth's name three times before delivering the warning.
Analysis
The triple repetition of 'Macbeth!' works like a ritual summoning or a curse, the same structure the witches used in their chant ('Double, double')—it frames the prophecy as a binding spell, not mere advice. The warning is also strikingly bare: just two parallel commands ('Beware Macduff; / Beware the Thane of Fife') with no explanation, forcing Macbeth to interpret the threat himself and thus ensuring he will overreact.
Essay Tip
Use this to argue that the prophecies are designed to provoke rather than inform—the incantatory repetition and lack of context make Macbeth feel hunted, which will drive him to attack Macduff's family and guarantee his own downfall.