Churches in America are facing a crisis. The number of people who call themselves Christians has decreased, while the “nones” – people with no religious affiliation – has increased. Some polls suggest that about 40 percent of Americans are regular church attendees, but real-life observation suggests that on any given Sunday only about 17 percent are in church, and that could drop to 15 percent by 2020.

One church in Arizona self-reported that 80 percent of its young families attend fewer than three Sundays a month, and that only 4 percent of the congregation attends 48 or more Sundays.