How long have journalists been writing stories about the decline of America's liberal mainline churches, both in terms of people in the pews and cultural clout?

I've been studying religion-news coverage since the late 1970s and I cannot remember a time when this was not "a story." For many experts, the key moment was the 1972 release of the book "Why Conservative Churches Are Growing" by Dean M. Kelley of the National Council of Churches.

You could argue, as I have many times on this blog, that the decline of the oldline left is a story that deserved even more press coverage than it has received. Why? Because the decline of the old mainline world helped create a hole in American public life that made room for the rise of the Religious Right.

Now we have reached the point, as "Crossroads" host Todd Wilken and I discussed in last week's podcast, where the story has become much more complex. While the demographic death dive has continued for liberal religious institutions (as opposed to spiritual-but-not-religious life online and elsewhere), we are now seeking slow decline in parts of conservative religious groups, as well.

What's going on? To be blunt, religious groups are growing or holding their own when they inspire believers to (a) have multiple children, (b) make converts and (c) live out demanding forms of faith that last into future generations. Yes, doctrine matters. So does basic math.

With this in mind, consider the brave attempt that The Baltimore Sun made the other day to describe what is happening in churches in that true-blue progressive city. Here is the overture and, as you read it, get ready for an interesting and, apparently, unintentional twist in the plot:

For a decade and more, Govans Presbyterian Church and Brown Memorial Woodbrook Presbyterian Church have labored in the manner of many mainline Protestant congregations: Working ever harder to provide spiritual resources for dwindling number of congregants.