The Bible is right.
The problem with the different branches of Christianity is that they have all interpreted it their own way rather than God's way. Some are closer than others, but none of them have it completely right and since all of them are human and therefore sinful, more often than not the politics within the church eventually lead to corruption and a falling away from the Bible.
Many, many "Christians" nowadays are lazy and rely on their pastors and sunday school teachers to teach them everything rather than learning and reading it for themselves as they should. The Bible instructs us to study the scriptures for ourselves so that we can correct, as a brother/sister in Christ, the Pastors, Church Officials, and others who are teaching and preaching incorrectly. Because this doesn't happen, corruption spreads all the faster.
Simply put, humans are wrong, God is right and if God is right, then his Word, the Bible, is also right. Anyone who claims otherwise is lying and anyone who takes only parts of the Bible to believe or twists the words to their liking is also lying. Face value isn't always pretty, but it is the truth.