This is an outstanding book. At only 99 pages, it can be a quick read, but it is packed with solid and useful information. Enns wrote this book as a guide for parents who desire to teach their children the Bible. He presents a threefold approach: in the early elementary years, focus on the story, life, and mission of Jesus; in the middle school years, focus on the "hook and hangers" of the Bible, specifically, the "pegs" of the larger story that they will be able to "hang" later knowledge upon; and in the high school years, begin to flesh out the Bible in more detail.
Enns suggests this progressive approach against other approaches because it focuses on the main "person" of the Bible--Jesus Christ--and on God's redemptive story, rather than our own theories or concepts of what we want the Bible to be about. For example, he encourages us not to teach the Bible simply as "stories" or as character studies, because these are often reduced to moralistic life lessons having nothing to do with the redemptive backstory; nor should we teach it (to children) book-by-book, because this approach often requires more maturity and a longer attention span than children have; nor should we teach it defensively, as in the current "creationism vs. evolution" arguments.
Instead, we should see the Bible not as a book of rules or a manual for morals but as a complex and fascinating story with a beginning, middle, and end. Our role as parents is to slowly work through this material with our children, linking the different parts of the story together over time. The Bible does not address modern issues the way we would like it to, so we must remember that it is the story of God's deliverance of his people and it presents a vision of what it means to live in that context. We acquire wisdom for living as we understand The Story in deeper ways.
Enns concludes with a five chapter discussion of this overarching Story which is very useful and informative.
This is a book for all parents, regardless of how old your children are. Although Enns discusses a teaching program for children as young as elementary age, I can easily see that parents can pick up in the first stage and go from there. There is nothing missed by starting to teach a high schooler more in depth about Jesus. The program can either be compressed or modified as older children have questions.
I can also see value in this approach for church-based classes, even for adults. Beginning with Jesus, and his centrality to God's story, and then branching out into biblical narrative, and then into biblical theology, a teacher could present a congregation with a very rich understanding of the Bible.
I highly recommend this book for any believer.