Blood is essential to every human beings survival. It is a fluid circulating throughout the body that carries nutrients and oxygen to the tissues in exchange for life and if this was somehow lost then the life would also be lost. No matter what caused the loss of blood, if it were jealousy, revenge, guilt or treachery the life would still be forfeit. In Macbeth there are many symbolic gestures towards blood, which ultimately develop into the main dominating theme of the play. In the beginning of the play blood is symbolized for ones honor and courage, half way through the play blood symbolizes treachery and treason, and towards the end of the play