What does the Bible say about Jesus' power over demons?

In Mark 5, we see a vivid demonstration of Jesus' power over the forces of darkness as he encounters a man possessed by a legion of demons. This event illustrates not only Jesus' authority over unclean spirits but also reveals his compassion for those who are suffering. The demons recognize Jesus as the Son of the Most High God and plead with him not to torment them. By casting the demons into a herd of swine, Jesus not only restores the man's sanity but also reveals his sovereign control over all creation. This act underscores the gospel truth that Jesus is Lord over all, including the demonic realm, and assures believers of his protective power.