Ipuwer Papyrus: An ancient Egyptian document known as the Ipuwer Papyrus describes calamities that befell Egypt, which some scholars suggest resemble the biblical plagues.
Ipuwer, the Egyptian eyewitness of the catastrophe, wrote his lament on papyrus: “The river is blood,” and this corresponds with the Book of Exodus ( 7:20 ): “All the waters that were in the river were turned to blood.”