Will all great Neptune’s ocean wash this blood Clean from my hand? No, this my hand will rather The multitudinous seas incarnadine, Making the green one red.
thou canst not say I did it. Never shake Thy gory locks at me !
Hail, king! Because that’s what you are now. Look, here I have Macbeth’s cursed head.
Blood and guilt are shown to be present in the scene because Macbeth is unable to wash the blood off his hand, which shows that he still feels the guilt of the murder.
Banquo’s ghost and his gory locks is a symbol of guilt for Macbeth. Macbeth is the only one seeing this ghost because he ordered the death of Banquo which shows that he is now guilty of his death. The blood on the ground represents the river Macbeth just stepped where he is decides to follow the path of blood.
The theme of blood is shown in the final scene because Macduff is carrying Macbeth's cursed head, after Macduff slain Macbeth.