Gospel Driven Sanctification
Jerry Bridges explains how the Christian life is not primarily about following rules, but about walking in the reality that the gospel brings us into. He begins this way:
Early in my Christian life I heard someone say, "The Bible was not given to increase your knowledge but to guide your conduct." Later I came to realize that this statement was simplistic at best and erroneous at worst. The Bible is far more than a rulebook to follow. It is primarily the message of God's saving grace through Jesus Christ, with everything in Scripture before the cross pointing to God's redemptive work and everything after the cross--including our sanctification--flowing from that work.
His short article "Gospel Driven Sanctification" may change the way you think about the gospel.