The Book of Jasher, or "The Upright Record" is mentioned in the Old Testament twice (See Joshua 10:13 and 2 Samuel 1:18). Incidentally, "Jasher" is not a person's name but is the Hebrew word for "Upright." Like the Book of Jubilees, the Upright Record is a retelling of the Genesis story from a different person's perspective other than Moses'. It also contains a wealth of detail missing from Moses' abbreviated account. For those who wish to read this book, you should know that there are two books circulating that are entitled "The Book of Jasher." The one that is supposedly a ninth century translation by Flaccus Albinus Alcuinus (the Abbot of Canterbury and the religious tutor of Charlemagne) is an obvious forgery.The books of Joshua and 2 Samuel in the Old Testament mention the Book of Jasher or "Upright Record" as a source of information for two historical events that the Bible covers briefly. These two stories are contained in the thirteenth century translation, but the incident in 2 Samuel is not covered in the ninth century edition at all. Furthermore, the thirteenth century translation appears to have been made from a Hebrew original. Besides the claim that it came from a Hebrew original, the thirteenth century copy of the Book of Jasher has the sound of an authentic historical document written by someone with a Semitic background who actually witnessed some of the recorded events. This thirteenth century edition is far longer than the ninth century edition and contains too many authentic cultural descriptions of Near Eastern and Semitic life to have been invented. Furthermore, none of the more vivid and colorful historical and cultural recollections in the thirteenth century edition that give it such a ring of authenticity appear in the supposedly older manuscript by Alcuinus.Since the Book of Jasher is not considered a religious document but a historical narrative, however, some of its stories may have been embellished or may contain inaccuracies. In addition, the Book of Jasher 's chronology for certain events differs in some cases from the abbreviated Genesis account of this time period in the Bible. I always trust that the Bible is more accurate in these cases. Nevertheless, the Book of Jasher has great value as a history since it offers a wealth of details the Genesis account by Moses lacks. In many cases, it can help us to understand difficult passages or situations recorded too briefly in the Bible. Unfortunately, it is currently impossible to prove whether or not the thirteenth century copy of the Book of Jasher available to us today is a legitimate Bible history or not until a much older manuscript is found. Someday, I hope this will happen. In the meantime, however, I am allowing the Holy Spirit to guide my choices and I believe that there is enough internal evidence in the Book of Jasher to prove that it is authentic.