I've got Lichtheim's 3-volume Literature of Ancient Egypt. The time between the earliest and latest entries in that collection? Something like 2400-2500 years (IIRC). And (again IIRC) it stops a few hundred years shy of crossing the BC/AD boundary. It spans 4-5 related, but distinct, major civilizations living on roughly the same land, only the last couple of which are recent enough to squeeze onto the leading edge of where we usually start the narrative of recorded history.
A little off topic. Gobekli Tepe is a really fascinating find. The size of the pillars, the inscriptions, the intricate designs of the pottery and jewelry (with cleanly drilled holes in them) give a glimpse of a sophisticated civilization with architecture and farming at a time when humans are supposed to be hunter-gatherers. Graham Hancock has a few very interesting books on this. He seems to believe that humans basically go through periods of amnesia or better put get periodically wiped out, lose their bearings and start over again. We become just like that ancient human circa 5000 BC looking at the ruins of Gobekli Tepe. Or the modern human looking at the Pyramids all over the ancient world and trying to piece history together.
Gobekli Tepe is awesome, but Mr. Hancock is a hack. He may begin with facts, but takes them to unfounded conclusions which "challenge mainstream science" (read: contain no discernible falsifiable thesis, recede ever into knowledge gaps, and are defined primarily by being anti-establishment).
Also, at the point that some apocryphal Israelites left Egypt, the Giza Pyramids would have already been 1000 years old.