Systematic Theology by Wayne Grudem

At around 1600 pages, Systematic Theology by Wayne Grudem is, as of now, the longest book that I have ever read (excluding the Bible). Though it is technically written to be a text book, Grudem's Systematic Theology is one of the most accessible books discussing theological matters that I have ever read. The only time that I found things hard to understand was when the subject matter itself was difficult, never was I turned away because of Grudem's wording.

I recommend this book as a resource that should be in every Christian household. It's accessibility and plain language make it easy to find answers and study theological subjects. As Christians, we are all theologians, in that we all should be studying about God and the things of God. For those who have never did any real theological study, this book is a wonderful place to start.