knowing God, your greatest advocate, nothing else in this world is more important than knowing sin, your greatest enemy. Perhaps only the most introspective and morbid souls would venture to read a book on sin—and one so heavily influenced by the Puritans, who dealt with the topic meticulously, forthrightly, and extensively. Yet few theological topics are as needed in the church today as the doctrine of sin (hamartiology). Christians should know that a proper understanding of grace requires a thorough