 A recurring theme in these myths is the effort of the gods to maintain maat against the forces of disorder . They fight vicious battles with the forces of chaos at the start of creation . Ra and <unk> , battling each other each night , continue this struggle into the present . Another prominent theme is the gods ' death and revival . The <unk> instance where a god dies is the myth of Osiris ' murder , in which that god is resurrected as ruler of the Duat . The sun god is also said to grow old during his daily journey across the sky , sink into the Duat at night , and emerge as a young child at dawn . In the process he comes into contact with the <unk> water of primordial chaos . Funerary texts that depict Ra 's journey through the Duat also show the corpses of gods who are <unk> along with him . Instead of being <unk> immortal , the gods periodically died and were reborn by repeating the events of creation , thus renewing the whole world . But it was always possible for this cycle to be disrupted and for chaos to return . Some poorly understood Egyptian texts even suggest that this <unk> is destined to happen — that the creator god will one day dissolve the order of the world , leaving only himself and Osiris amid the primordial chaos . 
