No one sins out of duty. We sin because it offers some promise of happiness. That promise enslaves us-until we believe that God is more desirable than life itself (Psalm 63:3). Only the power of God's superior promises in the gospel can emancipate our hearts from servitude to the shallow promises and fleeting pleasures of sin.
John Piper shows how to sever the roots of sin that ensnare us, including anxiety, pride, shame, impatience, covetousness, bitterness, despondency, and lust.