Communicating Sin to an iGen

A few days ago, I wrote a post quoting Tim Keller on "Communicating Sin to a Postmodern". Keller suggests it is helpful to communicate "sin is primarily idolatry."

Here is another example of communicating need from Scott McKnight. In his article, "The Gospel for iGens", he draws from Alan Mann's book, Atonement for a Sinless Society, and concludes, "For a person to feel guilty, that person must have a sense of morality." That appears lacking in this postmodern culture. So, how do you demonstrate need in a compelling (rather than repelling) way? McKnight suggests:

"...I have found that the self-in-a-castle feels shame about systemic sin, and their sensitivity to things like AIDS, poverty, and racism leads inevitably to recongizing the sin in each person. At some point in this movement to the castle door, the iGen will realize that systemic sin is linked to personal sin. Suddenly he or she feels accountable to God."

The whole article is worth the read. But I am intrigued comparing traditional "sin is falling short" messaging, with the approaches of both Keller ("sin is idolatry") and McKnight ("systemic sin links to personal sin").

Thoughts?