In The Miracles of Jesus, H. Van der Loos describes two main categories of miracles attributed to Jesus: those that affected people, e.g., the Blind Man of Bethsaida and are called "healings", and those that "controlled nature", e.g., Walking on Water. The three types of healings are cures where an ailment is cured, exorcisms where demons are cast away and the resurrection of the dead. Karl Barth said that, among these miracles, the Transfiguration of Jesus is unique in that the miracle happens to Jesus himself.[12]