Book excerpt: The ministry of casting out demons is one of the most powerful ministries available to the Church today. Many sicknesses, diseases, mental and spiritual problems, as well as other longstanding problems, may be the direct result of demonic attacks. The Bible teaches that Christians may exercise authority in the name of Jesus to free people from these problems. However, effectiveness in casting out demons is directly related to our experience level. Eric has nearly forty years in this powerful ministry and has seen incredible manifestations of God's power on behalf of others. In this short booklet, he shares some tips that can shave years off your learning curve and immediately increase your effectiveness in casting out demons.