Irony In "MacBeth"

Concerning human evil, Shakespeare's tragedy is about Macbeth's bloody rise to power, including the murders of MacBeth's competition, and the pathology of evil deeds generating still more evil deeds. As a fundamental frame of the play's most memorable character is Lady Macbeth. Like her husband, Lady Macbeth's ambition for power leads her into an unnatural, realm of insomnia and madness. But while Macbeth responds to the prophecies of the play's famous witches, Lady Macbeth goes …

…partly Macbeth's ambitions and confidence that make him so oblivious. He felt that everyone that had endangered him, he had already killed, and thought that nobody else could endanger him or his throne. He was on top of the world saying, "Bring me no more reports; let them fly all: ...I cannot taint with fear." (5.4.1-4) but the witches prophecies blind-sided him with their riddles. Even the most invincible king was vanquished in the end.