It’s just evangelicalism, but it’s a huge part of their life. The church is their community. My dad helped the place he attends get of the ground and go from a meeting room in a fire station to its own space. My step mother plays drums in the church rock band. My father goes to other countries for humanitarian work and evangelizing. They adopted a child from a different country and gave him an even more biblical name. They’re not bad people, but they do have trouble understanding that not everybody is like them, that not every disagreement is a disrespect, etc. I don’t think it’s a cult. Thankfully there’s no local guy that seems like a cult leader or anything like that. Financial stuff stops at tithing last I heard, so it’s not like they’re signing their lives over literally. And they’re not cut off from the outside world.