However, the weird sisters never played a role in this happening. Their actions had nothing to do with Macbeth becoming the thane of Cawdor, it is merely a coincidence that causes Macbeth to take the prophecy seriously. If it were Macbeth’s fate, he would not have needed to do anything to become king later on, it would just happen. The weird sisters were not necessary the fates, but prophets. They have no influence on Macbeth, they just see into his future and correctly predict what he will