Many cultures have stories of death and rebirth. In Japan, Amaterasu, the Sun Goddess, has to be coaxed from her cave to bring back the light. Meanwhile, the Hittite God, Telepinus, has to be coaxed from his mountains to bring back the rains. Among various Native American nations, Corn Mother has to be sacrificed to be reborn as corn for the people. The Inuit of the Arctic tell stories about Sedna, from whose broken body comes the bounty of their land.
Why do these disparate cultures have myths of death and rebirth? One could argue that they explain the cycles of life on earth. Daily, the sun rises and sets, and then rises again. In Ancient Egypt, Tawerat of Egypt acted as midwife to the daily rebirth of the sun.
However, these myths go beyond simply explaining the daily or seasonal cycles. They make explicit the delicate balance between the needs of people and nature. To keep the balance of life, deep harmony has to exist between the two. Lest they upset it, people need to be reminded of their relationship with nature. Myths are more than stories; they are theology.