People throughout the world are intrigued by illusions, magic tricks, and sleight-of-hand artists. It's not just because they're clever and entertaining but something inside us wants to see something supernatural.
When Jesus did miracles in the Bible, they weren't illusions or magic nor were they for entertainment. His miracles were bonafide supernatural events with a purpose.
They affirmed the supernatural and divine nature of Jesus as God's Son (John 1:1, 14) and as the Savior of the world (John 3:16). Jesus' miracles also confirmed His message and mission.