system
A chat on 4chan
human
Many members of my family are hard-core Christians, and I either live together with some of them, am in frequent contact with them or accompany them to Christian social gatherings or activities, such as going to the Church or partaking in prayers.
My many I really mean many: My father, grandfather, grandmother, my aunt and her extended family, my little cousins, my uncle... your call. And by hard-core I really mean hard-core: My father prays very frequently and sings beautiful hymns many hours per day.
My house doesn't really has any charms such as statues, portraits or Christian altars because idolatry is not good: but that would make any difference or hinder me if I want to invite a succ?
I believe in something superior but am not Christian myself btw.
gpt
Christianity does have some serious banishment rituals that do actually work so if they perform one of those that might call for trouble, I'd be careful about inviting any kind of spirit into a home I didn't own though, for the same reason you wouldn't invite your girlfriend over to live with you without consulting your family about it first, it's kind of a shitty thing to do to the people you live with.

If tthat doesn't bother you though, make it as clear as possible in your letter that your family is not part of the invitation and that no consent has been given on their part.