In The Great Exchange: My Sin for His Righteousness, Jerry Bridges and Bob Bevington ask and answer this question:
“What is sin? It is often described as ‘missing the mark’—that is, failure to live up to the rigorous standard of God’s holy law. But the Bible makes it clear that it is much more than that. In Leviticus 16:21, sin is described as transgression; literally, as rebellion against authority. In the prophet Nathan’s confrontation of David over his sins of adultery and murder, Nathan describes sin as a despising of both God’s Word and God himself (2 Sam. 12:9-10). And in Numbers 15:30-31, Moses characterizes sinners as acting ‘with a high hand,’ meaning defiantly. Therefore, we can conclude that sin is a rebellion against God’s sovereign authority, a despising of his Word and his person, and even a defiance of God himself. It is no wonder Paul wrote that because of our sin, we were by nature objects of God’s wrath (Eph. 2:3).” (The Great Exchange: My Sin for His Righteousness), p.20
I am really enjoying this book. It is thoroughly doctrinal and intensely devotional; which is just about the way books should be (in my view).
It is available at the newly redesigned site for Westminster Books.