While in the New Testament, Jesus studies and teaches in the synagogues, there are no synagogues in the Old Testament. While in the New Testament, Jesus’s disciples call him rabbi, there are no rabbis in the Old Testament. While in the New Testament, Jesus is often involved in conversations with the Pharisees, there are no Pharisees in the Old Testament. While in the New Testament, Jesus expels demons and unclean spirits, there are no demons in the Old Testament.