My wife and I now live in an upper-crust neighborhood with all the churches full of upwardly-mobile professionals. When we were penniless grad students, we lived in a working class neighborhood and on Sunday our church was packed with immigrant families and hipster gentrifiers.

It was only recently that I was struck by the fact that, imperceptibly, the majority of my college and grad school friends who were Christmas-and-Easter-Catholics when we met now report going to Church every Sunday and praying regularly. On social media, they used to post about parties; now they’re equally likely to post prayers for persecuted Middle East Christians or calls to help the homeless over the holidays.

My friends live all over town; some of them are young singles who move around a lot; all of them report looking for those mythical “empty churches” we hear so much about — and failing to find them. In fact, it’s closer to the other way around: If you don’t show up early, you might have to sit on the floor — and people are happy to do it.