Dybbuks, demons and exorcism in Judaism
Rabbi Isaac Luria, one of the greatest of Jewish mystics, would walk in the hills of 16th century Safed and point out to his students the souls of the dead, often standing on their graves. In the same city at the same time, the great legal scholar Joseph Karo, author of the Shulchan Aruch, the great code of Jewish Law, was composing another book dictated to him by an angel.