The first sign of the motif is visible when, King Duncan wants to know who his noble hero is that helped him win the war. "What bloody man is that?" (1.2.1). Another example of how blood is used is when, Lady Macbeth plans to kill King Duncan. She calls upon the spirits of murder so she can kill without regret. "Make thick my blood, Stop up th’ access and passage to remorse" (1.5.43-44). It also shows just before Macbeth kills King Duncan, where he is starring at a bloody dagger, which foreshadows about the murder he will commit. I see thee still; And on thy blade and dudgeon gouts of blood, Which was not so before" (2.1.45-47).
Throughout the story, Macbeth commits evil crimes because of his blind ambition. The blood of many noble people was on his hands. His ambition caused him to lose control of his mind and his kingdom. This story shows that when people have an ambition for power, they will hurt themselves at the same time and other people in the process.