J. I. Packer's Knowing God is a towering work of understanding God as He has revealed Himself to humanity. In my opinion this should be required reading for all Christians at some point in our lives: it has opened my eyes to aspects of God and His relationship with us that where unknown to me. I have come away with a much richer understanding of what I believe and a better understanding of how to talk about my faith and belief. After reading this book (and pondering and going back to reread...) I have been able to clear away a lot of confusion in my faith which has allowed me to continue growing instead of being stalled on for any number of reason for which I could find no clarification. For example I would particularly recommend the chapter on God's attribute of Love, which helped untie the knots I had gotten into listening to others, reading works that, alas were not grounded well in scripture ("let's cut his out and redefine this...") and hearing sermons from priests and pastors who have decided to get along with the world rather than face the tide of counter current. I feel much more confident being in the world without succumbing to the world. As a point of reference, I have given copies of this away, just randomly, as someone has shown and interest, and now have repurchased this book maybe 4 times. That's not only how good I think it is, but shows how interested others are when they see and hear about it.
This profoundly written work answers questions about God and Christ Jesus that are fundamental to those who have spent some time inspecting thier faith for weak spots. Furthermore, Packer does not take the easy road only applying the scriptures that support his perspective as he includes inconsistent biblical perspectives and forms solid and logical conclusions. This book is a must read for those looking to solidify their faith by knowing why they believe, building foundational knowlege they can share with others.