Continuing with books that every Christian should read.

Bible Doctrine - Wayne Grudem, edited by Jeff Purswell
Do you desire to love God more, to have a deeper relationship with Him? You can't love God if you don't know Him, and this book is a wonderful tool to help you grow in your knowledge of God. In this book, Wayne Grudem seeks to help his readers develop a systematic theology, or in other words, a thoroughly Biblical view of God. Grudem seeks to determine what the entire Bible says about a massive number of subjects, including God's character, the doctrine of election, church government, apostolic leadership, the role of the Holy Spirit, and the end-times. This book is an absolute must-have for every Christian. When you have a question regarding the Bible, this is the place to go. You will be well served by this book.

Buy the book here.

Knowing God - J.I. Packer
Like Bible Doctrine, this book will help you grow in a deep, soul-satisfying knowledge of God. Here's a taste of Packer's brilliance:

What matters supremely, therefore, is not, in the last analysis, the fact that I know God, but the larger fact which underlies it - the fact the He knows me. I am graven on the palms of His hands. I am never out of His mind. All my knowledge of Him depends on His sustained initiative in knowing me. I know Him, because He first knew me, and continues to know me. He knows me as a friend, one who loves me; and there is no moment when His eye is off me, or His attention distracted from me, and no moment, therefore, when His care falters.