What, can the devil speak true

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  Banquo reacts with suspicion to the witches’ prophecy, linking them directly to the devil and questioning the morality of supernatural truth.
• The rhetorical question highlights Banquo’s rationality and scepticism. 
• The noun “devil” directly associates the witches with satanic evil, reflecting common beliefs about witchcraft.
• To a Jacobean audience, the devil was a real spiritual force capable of tempting souls 
• Shakespeare warns that even truth can be a weapon of evil when used deceptively. Banquo becomes the voice of moral caution, increasing tension and highlighting Macbeth’s vulnerability.