From the introduction of the book:
The meaning of this “Sourcebook” is to give the players and the gamemaster alike, some information on adventuring in Ægypt, the land where the gods dwell. In this particular case we will take a ‘closer look’ at Ægypt. This land - which is geographically devided among the deserts and the river Nile - was the birthplace to a great nation; in fact one of the greatest and most long-lived the world has ever known, blessed as it is by the benevolence of the gods. Even the Empire, in all its greatness, sees the benefit of a religion that is so coveted by all of its people, rich and poor alike!