Demonic spirits are real

In this book, I have tried to answer the question which says, are there Demons in the world? I have met people from religious background and from secular background who said that Demons are not there. They said this is the kind of thinking which is in uneducated people. On the contrary, in my ministry I have seen and prayed for people from different parts of the society with Demons and illnesses caused by Demons. I have realized that some are arguing because they have not yet seen what a Demon can do and giving these real testimonies can clear the doubts in some people.