Book excerpt: Everyone has thoughts about God. But how do we know if our thoughts are true? If we want to know the truth about God, we need a sound approach to incorporating what the whole Bible teaches. In this concise introduction to systematic theology, theologian Graham A. Cole explores how we move from Scripture to doctrine in order to shape what we believe, what we value, and how we live. He shows us the importance of having the right method: rooted in the word of God, consistent with church history, in the context of a broken world, dependent on divine wisdom, and ultimately aiming at pure worship.