The Bible speaks without reserve about witches and at one point it suggests that they should not be allowed to live.42 African societies knew witches well, and many allotted power to witch-finders. Europeans did not want to encourage these rivals in charisma, particularly when the witch-finders encouraged the killing of witches, but if Europeans expressed scepticism, indigenous Christians might ignore them and take matters into their own hands. In the twentieth century, the results grew increasingly fatal in certain parts of rural Africa, where witch-killings marched in step
