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newjaninev2 Evidence of magic? David Blaine, James Randi. Definition of magic: "the power of apparently influencing the course of events by using mysterious or supernatural forces." Most magic is illusion, deception. The witches and fortune tellers condemned to death by the Bible, but magic can also be supernatural. If it's simply fraudulent, as most often, especially nowadays, it's simply that. Fake. A con. But if there is any real supernatural aspect to it it is likely demonic. The witch of En-dor, for example, or fortune teller Paul caused so much controversy with by casting out the demons of the young girl who local businesses relied upon for their guidance.
Ghosts for example, aren't the spirits or souls of the deceased, they are demons pretending to be. Like people often do with God, they can also do with the power of magic. They think it's true and useful when it's really just a confidence trick. The power of the imagination.
But God, in the Bible, can also perform similar illusions. The contest between Moses and the Pharaoh's priests, for example, or Jesus's wounds for doubting Thomas. These "signs" can be for instruction, a demonstration of power, for those who have little faith.