Slight non sequitur, but slightly connected (welcome to my brain). Anyone can safely ignore this long, rambling comment.

There’s a series of books called The Laundry Files by Charles Stross. It starts off as kind of an HP Lovecraft meets spy novel meets a sys admin workplace humor thing. Somewhere in there, I think it’s the 4th book, there’s one called The Apocalypse Codex that deals with a quiverful group of Christian true believers that are accidentally worshipping an otherworldly horror and using parasites to “save” folks. It even features a forced birth center. I’ve known quiverfull, prosperity gospel, literalist folks my entire life, but every time I hear about quiverfull people I still think about that novel. I can highly recommend the series if anything I wrote above sounds remotely interesting, especially if you can get the audiobooks. Here’s one of my favorite passages from that book:

“They’re believers, Mr. Howard. Pentecostalist dispensationalists—they are saved, but they are surrounded by the unsaved, and they think their master is returning imminently, and anyone who isn’t saved by the time of his arrival is doomed. So they intend to save everyone whether or not they want to be saved, one brain parasite at a time.”

Other than the extra-dimensional horror, I think the book pretty accurately describes the mindset of those people. The series metaphor for modern society is so good that he had to delay and rewrite the last book because the original plan, prior to the pandemic, was to have the final resolution be a highly contagious disease.

Yeah we had a big quiverfull church not far from where I used to live. They were in a cycle of being in the news every few years for how they promote their flock to get on government assistance to afford more kids. People making six figure incomes were getting a variety of benefits because they had over a dozen kids, in two cases two dozen kids. This would piss people, garner calls for legal changes to stop this abuse, bring up how they are exactly the type of people who want to scare people with “welfare queen” stories, etc.

For a couple generations, the pumping out children mandate made it grow. However, around the third generation they started seeing a steep decline in parishionership. Basically the founding members’ kids weren’t nearly as willing to stay in this cult, and by their grand children’s generation, their birthrate wasn’t enough to replace their flock. By the time their great grand kids’ generation came around (current time) they were quickly dwindling in numbers. Now every time their welfare stuff hits the news they now have interviews with people who cut their families off, and left the cult, being interviewed about how insane they are.

From what I have been able to find, this seems to be the general timeline of these “super family” sects. They burn themselves out, and as time time progresses, the burnout comes more, and more, quickly. So the long term prospects of the baby factory faiths isn’t good.