Ok, looking up Urantia....
The Urantia Book (sometimes called The Urantia Papers or The Fifth Epochal Revelation) is a spiritual, philosophical, and religious book that originated in Chicago sometime between 1924 and 1955. The authorship remains a matter of speculation.
....The authors refer to the book as the fifth revelation of "epochal significance" to humankind, the fourth epochal revelation having been the life of Jesus. The claim of revelation in The Urantia Book has been criticized for various reasons. Skeptics such as Martin Gardner say it is a product of human efforts. Because the book does not support certain tenets of Christianity, such as the atonement doctrine, while at the same time presenting an account of parts of Jesus' life absent in the Bible, others with a Christian viewpoint have argued it cannot be genuine. Gooch notes that while its "somewhat dated, elegant" prose could be read as fiction, due to its claim of divine inspiration "the book invites reactions far more scathing than [it] ... might otherwise merit."