Unclean Spirits differentiates between the spirits that inhabit spirit prison and hell in the spirit world. The term "evil spirit" applies to those who have never taken a body, while the term "unclean spirit" applies to those who experienced mortality and acquired a body. According to Unclean Spirits, the only spirits completely beyond the reach of the Atonement and condemned forever in hell are Perdition Spirits (scroll down to para. 9), who had a very close relationship with God and then denied Him while in the flesh. According to Joseph Smith, to become a Perdition Spirit, a mortal must receive the Holy Ghost, deny Jesus Christ when the heavens are open to him, know God, and then sin against Him. It is not a singular process.
Unclean Spirits asserts that Perdition Spirits are the most dangerous, because they have the power to inflict physical pain upon those undertaking important missions for the Lord. They've even been known to try and stop children from getting baptized in the LDS Church. The editor of Unclean Spirits reports a personal experience with a Perdition Spirit identified as Cain. Yep, that Cain...the same one who slew Abel:
I had one experience with a perdition spirit who did not attempt to harm me. I was driving about town, lost in thought, when I suddenly felt an unusually strong darkness in the car. I could not see him, but I knew instantly that Cain, son of Adam and Eve, was sitting in the passenger seat next to me. I also knew instantly that he was a perdition spirit. I was afraid because I thought Cain was going to attack me and try to force me to wreck my car to kill me. When Cain did not attack, I calmed a bit and asked him what he wanted. I felt an anguishing sadness coming from him. He asked if I could help him. I told him that I wished I could help him, but he had made choices that prevented it. I said I was sorry for him and he left.
The blogger claims that he receives inspiration directly from God. God answered his request to teach him to protect himself against evil forces by inspiring him to read specific writings from early LDS prophets and apostles that would teach me doctrinal principles about Satan’s tactics. God was very specific in His teaching method: The name of a book and a keyword or page number would appear in his mind. Then he would locate the book and find the passage that God wanted him to read. He would think about that passage and then God would allow him to have experiences that taught him what the passage meant. Then the next book and keyword would appear in his mind and he would repeat the process of finding the new passage and learning from it. This line-upon-line learning continued for several years until he could see how the many separate doctrinal principles fit together.
