Other Source Theories
During the 19th century various German scholars presented widely differing theories regarding the origins of the first five books of the Bible.  None of these theories gained complete ascendancy until 1878, when a particular theory strikingly different from most of the views previously held was advanced by Julius Wellhausen.  Though more than a century has passed during which no new evidence for the theory has been discovered, it is still being taught today in almost the identical form in which Wellhausen presented it.