Every Christian should have this book on their shelf. While its not lightly reading it is eye opening. A quick and insightful resource, a shield against 'every wind of doctrine'.
I once did own this book... It is a very good book, but I donated it to a book store... Now I am kicking myself in the rear. I have been searching for the most updated version. My old one was a Red Hard Cover. I highly recommend this book to use as a tool of evangelism.
While often interesting, this book was a bit of a rollercoaster ride through fundamentalism. Ventriloquism is satanic, as are all forms of magic and rock and roll music. Hobart is a bit too much for me and my more moderate beliefs though I do actually believe in some of what he says.