Gospel-centeredness is all the rage today. We are told to live gospel-centered lives, to pray toward a gospel-centered faith, to have gospel-centered humility, to be gospel-centered parents, to form gospel-centered churches, to have gospel-centered marriages, to say goodbye at gospel-centered funerals. The gospel, we are told, must be central to all we are and all we do. This is good. God really does mean for the gospel to be central to the lives of his people and to be right …

In September of 2006 George Barna released what must be among his most influential studies. Following interviews with more than 22,000 adults and 2,000 teenagers from across America, he revealed that the majority of twentysomethings who are raised as Christians subsequently abandon the faith. The study found that “most twentysomethings disengage from active participation in the Christian faith during their young adult years–and often beyond that. In total, six out of ten twentysomethings were involved in a church during their teen years, …