A variety of readings from spiritual readings to children's literature.

After fear, the next demons that named themselves and came out were pride, jealousy and self-pity. So self-pity can be a demon! I said to myself. - Derek Prince

Prince, Derek. They Shall Expel Demons: What You Need to Know about Demons--Your Invisible Enemies (p. 47). Baker Publishing Group. Kindle Edition. 

It would be natural to assume that, after my wonderful deliverance from depression, I began immediately to share these exciting truths with my congregation. Unfortunately, this was not so. There were two main reasons. The first, quite simply, was pride.

Prince, Derek. They Shall Expel Demons: What You Need to Know about Demons--Your Invisible Enemies (p. 38). Baker Publishing Group. Kindle Edition. 

The New Testament writers give a clear picture of the nature and activity of demons, but the key to understanding these areas is an accurate explanation of the terminology they used.

Prince, Derek. They Shall Expel Demons: What You Need to Know about Demons--Your Invisible Enemies (p. 14). Baker Publishing Group. Kindle Edition. 

I was reading the opening verses of Isaiah 61, which describe the supernatural work of the Holy Spirit in bearing testimony to the message of the Gospel—verses Jesus applied to Himself in the synagogue in Nazareth (see Luke 4:16–21). As I came to the words in verse 3, “the garment of praise for the spirit of heaviness” (KJV, emphasis added)—also called “a spirit of despair” (NIV) and “a spirit of fainting” (NASB)—I could read no further. It was as though the phrase the spirit of heaviness was underlined by some invisible hand.

Prince, Derek. They Shall Expel Demons: What You Need to Know about Demons--Your Invisible Enemies (p. 32). Baker Publishing Group. Kindle Edition. 

...God in His sovereignty began to give me direct personal experience in recognizing and dealing with demons. --Derek Prince

Prince, Derek. They Shall Expel Demons: What You Need to Know about Demons--Your Invisible Enemies (p. 27). Baker Publishing Group. Kindle Edition. 

The derivation of the word Demon from the original Greek.

This chapter written by Derek Prince demonstrates expelling demons began with Jesus ministry, continued with his Apostles and continues to this very day until "it is finished."

Derek Prince, the linguist explores the different iterations of the word demon from the original Greek.

The New Testament writers give a clear picture of the nature and activity of demons, but the key to understanding these areas is an accurate explanation of the terminology they used.

Prince, Derek. They Shall Expel Demons: What You Need to Know about Demons--Your Invisible Enemies (p. 14). Baker Publishing Group. Kindle Edition. 

Derek Prince details his beginning experiences with the casting out of Demons.  He was a new Pastor at a small church.  A woman in the congregation release a horrifying shriek during one of his sermons.  He was confronted with a choice.  Allow his fear from lack of experience dealing with these kinds of problems cause him to back down from this confrontation with evil.  Or he could summon his courage, trust Christ and attempt to expel the Demon possessing the woman.  This was his beginning of a search for and answer to the question "Are Demons real?"