I mean, I’ve never been able to wrap my head around people who are Christian (or whatever) and pick and choose which of the religions “rules” to follow.

I realize to not do so in general makes society a pretty awful place, but most religions say you’ll go to hell if you don’t.

It’s the Supreme Court’s job to explicitly follow the constitution. In your example I want them to be religious fundamentalists. If that turns out to be an issue we have a body that can change our society’s “bible.”