What is the most spiritually challenging or intriguing book you have ever read? (Obviously apart from the bible) I am in the process of building my electronic library on my ipad and I'm looking for good stuff. So if you could recommend 1 book, what would it be? please provide info on the books topic and stuff. I would have to say that the most challenging book I have ever read "By my spirit" by Jonathan Goforth. I'm also currently reading Charles Finney's autobiography which has been super challenging and has been a blessing to me as well.