How do we know Jesus has the authority to cast out demons?

The authority of Jesus Christ to cast out demons is clearly displayed in the Gospels, particularly in Mark 5 when He confronts the man possessed by many demons, referred to as Legion. This narrative signifies that Jesus was not only aware of the man's plight but also ordained to rescue him from the depths of spiritual oppression. When Jesus commanded the unclean spirits to leave, they immediately obeyed, showcasing His divine power and authority over the spiritual realm. Such events affirm that Jesus is the Son of God, equipped and willing to liberate captives from their sins.