An introduction to what the Bible says about the devil, evil spirits and demon possession When Jesus walked the earth, he cast out demons and had powerful encounters with the devil. But who exactly is the devil, and where did he come from? And what is he up to in the world today? This short, readable book explains clearly and simply what we can say with certainty from the Bible and Satan, demons and evil spirits. Suitable for all Christians – especially those who are struggling with questions about Satan.