A sign, saying, or image that anticipates, sometimes only for those who reread, something that will happen later in the work.
In Macbeth
Prithee, peace! / I dare do all that may become a man; / Who dares do more is none.
Macbeth says that "Whoever dares to do more is not a man," and the phrase anticipates what follows: he crosses that limit when he kills Duncan and, in the acts to come, loses precisely the humanity he claims here to defend.
Act I: The Prophecy and the Temptation, Macbeth
Is this a dagger which I see before me, / The handle toward my hand? [...] I see thee still, / And on thy blade and dudgeon gouts of blood, / Which was not so before.
Act II: The Murder of Duncan, Macbeth
And you all know security / Is mortals' chiefest enemy.
Act III: The King Ruled by Fear, Hecate
Macbeth, Macbeth, Macbeth! Beware Macduff; / Beware the Thane of Fife.
Act IV: Deceptive Prophecies and Massacre, the first apparition, an armed head
Be bloody, bold, and resolute; laugh to scorn / The power of man, for none of woman born / Shall harm Macbeth.
Act IV: Deceptive Prophecies and Massacre, the second apparition, a bloody child
Macbeth shall never vanquished be until / Great Birnam Wood to high Dunsinane Hill / Shall come against him.
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