Why is this book important? Because the gospel is of first importance (1 Cor 15:1-4) and because the gospel is the power of God for salvation for all who believe (Rom 1:16-17). Without a clear understanding of the gospel, we cannot faithfully proclaim the message through which God has sovereignly determined to save the world. That is big enough and important enough to take the time to get it right. This book will greatly aid us in that responsibility.