Everything in this world exists in its own form; for example, steel and oxygen. Even though they exist, steel is quite different than oxygen. The first we can see and touch, but the latter we can not see or touch. However, both exist in their own way. The same is true of the devil. He is present in this world in his own particular form. Thus, it is imperative to understand that the devil is a reality. He has power. He is mankind's worst adversary. Αnd he uses many "methods" to harm humanity. This publication examines all of the above and it also looks at how we can defend ourselves from οur worst enemy. Ι pray this book will strengthen our faith in Christ our savior. Amen.