text: plz help me fine the answer. read all. will u? ok so i was watching the music channel on tv and it said that isaac slade, from the fray, went to guadumala with his parents while they were serving as missionaries so that made my wonder... is he and his family mormon? so here is my question... is isaac slade mormon? you don't have to be a mormon to be a missionary.  i know many missionaries that go all over the world and they are not mormon.  they are christian.  it does not matter what religion you are.  if you are spreading the gospel, you are a missionary.