Edited sentence: According to classical rabbinical sources, Benjamin was only born after Rachel had fasted for a long time, as a religious devotion with the hope of a new child as a reward, and by then Jacob had become over 100 years old.Benjamin is treated as a young child in most of the Biblical narrative, but at one point is abruptly described as the father of ten sons; textual scholars believe that this is caused by the genealogical passage, in which his children are named, being from a much later source than the Jahwist and Elohist narratives, which make up most of the Joseph narrative, and which consistently describe Benjamin as a child