The book of Job is a beautiful and inspirational book of scripture with some of the clearest teachings on God's power, the nature of life, the beauty and worth of the Earth, and other important doctrines.
One thing I thought of recently, though, is that Job's friends say things that are more or less against Job, and at the end, God says that only Job spake right.
Are there any denominations that have officially marked the words of Job's friends as doctrinal or not doctrinal?