Christianity is a good thing because it provides a "fellowship" or a "congregation", in short a "church".
As to truth in teaching we should keep in mind the Bible was written by men who claimed to be inspired. It was men added verbiage which doomed to hell anyone who would add to or detract from the book. These men thought they had things perfect so sealed closed the book for all time. Some text proclaims Israel as a special country or people; anyone who speaks ill of the Israelites will be doomed. Ya think maybe a Jew had a hand in writing those lines?
As I was reading my Bible I was inspired by God. He told me the Bible was written by men and that He does not limit his revelation to just a few people (like mohammand or Abram).