The Murder of King Duncan in MacbethMany factors were involved in Macbeth's decision to kill King Duncan. He had pressure from his wife, he had an idea in mind, given by the three witches, and he was extremely ambitious. All of these factors ultimately contributed to his demise and his decision to assassinate his king. This whole situation is due to three witches who wanted to cause trouble for Macbeth. They knew from the beginning what would happen to him in the end. Macbeth is ambitious and the witches played on this by promising him great things, like becoming king of Scotland and Thane of Cawdor. Immediately after speaking with the witches, it happens to be titled Thane of Cawdor. Macbeth now believes the witches' words and sincerely believes that the crown of Scotland will fall to him naturally. This idea goes awry when Duncan names Malcolm his heir. Macbeth, still believing in witches, continues his plan to murder Duncan. Lady Macbeth is a very loving wife to Macbeth and she wants to do everything she can for him to achieve his goals. She goes just a little too far and puts too much pressure on Macbeth to commit crimes he's not sure he wants to commit. After Macbeth sends her a letter about witches' premonitions, Lady Macbeth is no longer the sweet, innocent lady we expect her to be. She is transforming into someone as ambitious as her husband and she wants to do whatever it takes to help him keep Duncan aside. She even goes so far as to call Macbeth a coward and mock his courage when he fails to finish the job. She's even willing to do it herself (planting the bloody knife with the guard). Lady Macbeth constantly puts pressure on Macbeth to do things he is unsure of. She almost turns into a bully who challenges Macbeth to go out and do bad things. She even says in a soliloquy that she wishes to be freed from all of her morals and values ​​so that she can help him commit these crimes. Finally, we must look at the tragic flaw of the hero himself..