'Ghosts are not spirits of dead humans': 'UFOs and God' author says the Bible points to demonic deception

In his new book UFOs and God: Revealing Deception and Truth Behind the Supernatural, Invisible War, Derrick Warfel argues that UFO encounters are fallen supernatural powers rather than extraterrestrials,

“Pure religion and undefiled before God and the Father is this, To visit the fatherless and widows in their affliction…”