It seems that Set was at one time regarded as the "chief god", carrying the epithet, "His Majesty", shared otherwise only with Ra.  He was a son of the earth (Geb) and sky (Nut), husband to the fertile land around the Nile (Nebt-het/Nephthys), and brother to death (Usir/Osiris), and (Aset/Isis, the wife of Osiris)...