Inspired by the cycles of nature, the Egyptians saw time in the present as a series of recurring patterns, whereas the earliest periods of time were linear. Myths are set in these earliest times, and myth sets the pattern for the cycles of the present. Present events repeat the events of myth, and in doing so renew maat, the fundamental order of the universe. Amongst the most important episodes from the mythic past are the creation myths, in which the gods form the universe out of primordial chaos; the stories of the reign of the sun god Ra upon the earth; and the Osiris myth, concerning the struggles of the gods Osiris, Isis, and Horus against the disruptive god Set. Events from the present that might be regarded as myths include Ra's daily journey through the world and its otherworldly counterpart, the Duat. Recurring themes in these mythic episodes include the conflict between the upholders of maat and the forces of disorder, the importance of the pharaoh in maintaining maat, and the continual death and regeneration of the gods.