Only thing that bothered me about the books is that there’s no spiritual aspect to it at all. I don’t know anything about the author, but it was a great opportunity lost, IMHO.
The author is also the author of The Twilight Saga.
The books were originally written with GWB in mind.
They are liberal books, so of course, there was no spiritual aspect.
Disclosure: read all 3, saw both movies in the theater, as did my husband. Enjoyed the books and the movies.