Start with high-confidence spiritual warfare books, then narrow by subgenre or adjacent topics.
Sense and Nonsense About Angels and Demons
Kenneth D. Boa, Robert M. Bowman Jr.
Satan Is Alive and Well on Planet Earth
Hal Lindsey, Carole C. Carlson
Winning the War in Your Mind
Groeschel, Craig
Angels
Vinita Hampton Wright
Secrets to Spiritual Power
Watchman Nee, Sentinel Kulp
Angels to Help You
Lester Sumrall
A Divine Revelation of Angels
Mary K. Baxter, T. L. Lowery
Demons the Answer Book
The Day Satan Called
Bill Scott
Your Story Has a Villain
Jonathan Pokluda, Joel Muddamalle
The Joshua Generation
Brian Simmons, Candice Simmons
Fervent
Priscilla Shirer
Reviving Old Scratch
Richard Beck
Battlefield of the Mind
Joyce Meyer
Stand Firm and Act Like Men
Joby Martin, Charles Martin
Our Invisible Allies
Ron Phillips DMin
The Bait of Satan, 20th Anniversary Edition
John Bevere
God's Path to Mental Health
Rick Renner, Eddie Turner
Demons
Michael S. Heiser
