What is Shakespeare trying to communicate about life in this passage spoken by the character Macbeth?

shake-spears communication is how he he makes Macbeth once was scared and was getting told by a woman that wanted to be a man telling him that he is acting like a girl leading him to killing king Duncan to become king and not to be scared once he kills Duncan Shakespeare involves figurative language like metaphors on act 2 scene 2: ” Will all the water in the ocean wash this blood from my hands? No, instead my hands will stain the seas scarlet, turning the green waters red.” that shows that shakespeare likes to involve figurative language to express macbeths fright.