My point here is that all Christians are “cafeteria Christians”. They all pick and choose the pieces they agree with and want to follow. They discard the inconvenient stuff as no longer relevant and claim the things that they believe are supported by the scripture.

So much of Christian belief is not in the bible no matter what particular sect you are a part of. I remember when those “Left Behind” book’s came out and I found out many of my friends believed in a physical rapture where those “saved” would literally disappear from the Earth. I had no idea this was even a thing because it’s not something my church taught and it’s not in the bible.

Most (all?) other groups have their own rules and beliefs that are not in the bible. I’m not sure it’s possible to be fully faithful to the Bible because it’s not entirely self consistent. Also the books of the bible themselves were chosen from many candidate texts. It’s not as if Jesus left a bibliography.