I've always been very weary of spiritual warfare books. I tend to find them hysterical and they often stretch biblical texts. But in this work, Storms has done a wonderful job staying within the bounds of scripture, citing and explaining dozens of texts, to describe how the New Testament sees warfare with the enemy. Many works like this tend to focus on a few passages and build entire theologies around those. Not this book. Storms quotes many passages from all over the Bible.
It is indeed comprehensive. I was expecting more of a practical guide, which there is some practical guidance later in the book, but got a rather thorough explanation from scripture instead. It's very accessible to the average reader, but dense enough for the more seasoned reader like myself.
I am still a little skeptical of "deliverance ministry" but not nearly as much as I was before reading this. I appreciate that Storms discusses the abuses of things like it and other charismatic practices. I would definitely recommend to anyone who is a follower of Christ. It has helped explain some things in my own life that couldn't be explained by natural means.