Here are three discussions by Tim Keller that aid our thinking about the nature of the Gospel and its ongoing function in the life of the Church and believer in the way of sanctification.
a) Exposing the idolatry of all our sin (disbelief in the Gospel), and
b) Expelling unbelief (the heart of all misbehavior) by the transforming truth/work of the Gospel.
a) Exposing the idolatry of religion (grace-less) and irreligion (truth-less) by way of wisdom of the Gospel.
a) Exposing the idolatry of civil, emotional, or familial “faith”
b) Expounding the need for a personal faith in the Gospel of Jesus Christ.
The more of Tim’s stuff I read and hear, the more our faith—that the power of God for all redemption is the Gospel alone—is confirmed!