Keller takes us in depth from the baptism and temptation of Jesus and then expands on ideas about Satan.
One of the big ideas that everyone needs to know and understand comes from this book: just because you give your life to God does not mean your life will be safe. The life of Christ, someone who should have been protected, is perfect example that evil is very real and is part of everyone's life.
Unfortunately, after that insight, everything else Keller writes is common knowledge - at least it was for me. Use Scripture in battle with our enemy is something Jesus sets as the example.
This is a very short e-book. But Keller has a way with words. Maybe he and N.T. Wright could co-author a book. I'd be excited for a book like that!
This book was provided for review, at no cost, by Dutton Publishing.