Are you going by the number of confirmed cases? In most places the number of infected people has been about ten times the number of confirmed cases.
True, but it's the cases that get to the hospitals that are confirmed, and those are the ones I find significant. We could be discussing mortality rates, which are a much smaller number, or we could be talking total confirmed/unconfirmed cases, which make a much bigger number. I'm taking the middle of the two.
Twenty people in the church might get the sniffles, but I'm more interested in the ones who get slammed with something more. Take that rate, using fresh cases because they represent those that will need a hospital but aren't there, yet. Compare that number to the population of the county (cases per county divided by population), and multiply that by the church's average attendance. Yes, I know that a marginally sick person could walk through the door and cause someone to be worse than marginally sick, but I'm working with what I've got. It's a relative number, and that's the best I can do.
That would be contrasted with a certain large church in the San Diego area:
Rate: about 244 confirmed cases per day
Population: 3,300,000
Church attendance: 2,000
Relative risk: 14.8% (high risk)
Take a certain church in Orange County, California:
Rate: 100 confirmed per day
Population: 3,176,000
Church attendance: 45
Relative risk: 0.14% (very low)
I know the absolute statistics are sketchy, but it's a calculated risk. Chance has a funny way of doing the unlikely. This is all trivial to me, anyway, because I'd rather die from the virus than continue living like this.