"Complete, engaging and educational"
I'm just finishing my second listen and enjoying it as much as the first. It is a dense book and presents thousands of years of human religious history in detail. Despite the tremendous amount of information Karen Armstrong packs into this book, the overall themes are easy to follow.
I particularly appreciated that she chose to write a book focusing on unknowing and the elements of religious and spiritual practice that take one beyond language itself. If you want a general overview of religious history, you might choose her History of God or The Great Transformation. However, if you want an in-depth look at 2000 years of faith and the interplay of human practitioners and ineffable religious experience in Christianity, Judaism, Islam and Buddhism, this is the book.