sympathy from the devil
I have relatives who are foaming at the mouth religious fundamentalists (fanatics). They've bought into the whole package, e.g. literal belief in Biblical fairytales, rejection of the scientific method, fanatic obsession with apocalyptic prophecy, etc. This is a no-go area in my family and can make family reunions unpleasant. I'm just a garden variety agnostic. When I'm with family, I keep my mouth closed about religion and change the subject of conversation should the issue come up.
Thankfully, there's nothing like that in my family. You have my sympathies. On second thought, I DO have an analogous family situation, I'm burdened with an overabundance of liberal Democrats...