Macbeth figuratively compares Malcolm to a poisonous serpent or snake. In Act 1, Scene 7 of the play, Macbeth refers to Malcolm by saying, "These evils thou repeat'st upon thyself / Have banish'd me from Scotland. O my breast, / Thy hope ends here!" Macbeth sees Malcolm as a threat to his own ambitions and ultimately blames him for causing his downfall. The comparison to a snake suggests that Macbeth views Malcolm as someone deceitful and treacherous.
In Act IV, Scene III of Shakespeare's play Macbeth, Macbeth figuratively compares Malcolm to a fly. He uses this metaphor to express his frustration and anger towards Malcolm's actions. Macbeth refers to Malcolm's escape to England as a "fly" that is eluding him, just like a small insect that is difficult to catch. This comparison reflects Macbeth's growing paranoia and obsession with maintaining his power, as he sees Malcolm as a threat to his throne.
