The find, which dates back to 2,300 B.C., was made at the site of the ancient necropolis of Saqqara near Cairo.
Archaeologists excavating a burial shaft have unearthed a 13ft scroll inscribed with a chapter from the book.
Egyptian authorities have revealed another significant discovery at the Saqqara necropolis south of Cairo.
The L-shaped necropolis, which dates back to the Fifth Dynasty, was discovered near Saqqara last month.
A remarkably well preserved 4,400-year-old tomb has been discovered in the ancient city of Saqqara.
Excavations at the Saqqara necropolis in Egypt have revealed an immense number of animal burials.