The Exodus—the deliverance from slavery and departure of the Israelites from Egypt under the direction of Moses—is one of the best known stories of all time. But did it actually happen? Under the conventional Egyptian chronology, which places the Exodus narrative during the reign of Ramses II, there is basically no evidence that it did. But scholars have long noted that there are significant problems with the conventional Egyptian chronology, and certain academic trailblazers (such as David Rohl) have suggested that the problem is not with a lack of evidence for the Exodus, but with the conventional chronology. By placing the Exodus during the 13th Dynasty rather than the 19th Dynasty, the evidence is there—evidence of Semites in the Delta region and their mass departure.