Saw this piece from Tullian Tchividjian applauded by another R2K advocate. In the article, Tullian sets out to rescue the world from the church. You see, the church has broken the spirit of wordlings and that's why people are abandoning churches and faith in God, altogether.
On the surface, he says some things that are true. In the end, however, the Gospel is, ironically, reduced to little more than a coping mechanism for an overarching sense of failure. This is Tullian's approach to the law: he does not preach it. He assumes... the world has heard enough of the law because the church's "performancism" is the law in action. If you feel like a failure (and who doesn't?), you've received the ministry of the Law and are ready for the Gospel. He draws on that sensation, that feeling, and applies the "healing" balm of telling his listener that God expects failure from us—that's why He sent Jesus to do it all for us. Tullian creates the atmosphere of "Law" minus repentance, and it's little more than a psychological ploy.
From Tullian, this is nothing new. As time has passed, it has become obvious that these things Tullian says are not occasions where he's just speaking carelessly. Nor is such cheap grace being applauded by R2K men an anomaly. Rather, with both Tullian and R2K, these errors are a defining characteristic. There is a "mood" to strains within R2K, and this mood reflects the darker mood of post (post)modernism, drawing on it as inspiration for a modified message.
The medium is the message and that message becomes sickeningly obvious in the set, props, and attire put on display.
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[On October 25, 2013, this post was edited, removing the text "Gospel Coalition's Fab One" from the first and "want to be like Tully" from the second paragraphs.]