"Look like the innocent flower but be the serpent under't" LADY MACBETH , 1,5
metaphor- instructing husband to appear well meaning,gentle in order to hide his deceit, portrays manipulation as the most effective method for power
imagery- 'innocent flower'-goodness, beauty, purity contrasting with the noun 'serpent'. Specific use of snake-semantic field of sin, lies conveying religious referance to Garden of Eden where Adam + Eve drawn to sin by devil disquised as snake.
jacobean audience- link Origional Sin + Shakespeare encourages to not be decieved by appearances, foreshadows regicide