All cultures have tried time and time again to explain this. Despite the different interpretations, it seems that there is one image that dominates across many cultures which is a Tree of Life. For most, it is a mystical tree, seen as a symbol that unites the earth and sky. The roots are firmly planted in the ground, signifying stability, its branches and leaves grow towards the sky and its trunk, the being that unites both sky and earth.
In this sense, all beings on Earth are related to one Tree of Life another as we live on the same place which is a part of this Tree. Every being is equal and each species will give and depend on other species; such as how the grass feeds deer which is eaten by the tiger and eventually the tiger decomposes on the grass, feeding it with nutrients. Each person, each culture in the world is just a branch belonging to the same Tree.
For the Egyptians, the acacia tree is their tree of life. It is due to the tale of Isis and Osiris who emerged from an acacia tree which is the patron tree of Iusaaset, one of the early Egyptian goddesses with vague origins. In the Baha’i faith, their view on the tree of life is more symbolic. The Tree of Life is the embodiment of the Manifestation of God, the source of all spiritual good.
The Norse’s Tree of Life was called Yggdrasil. It grows in the middle of Asgard, an evergreen Ash tree that shades worlds with its branches. The Norse gods held all meetings and court under this tree. The god, Odin, hung himself from the branches of this tree to gain power over the runes and all their secrets. On the day he gained the knowledge, he fell, screaming.
A tree seems immortal as it can live for hundreds of years; so people view it as being able to bear witness to several generations of a family. Perhaps being the etymology of the phrase “family tree”. When a tree (which could mean the current generation) falls, the seed (sons and daughters) are left behind and they will spring forth to be new lives. A more direct interpretation would be the “branching out” of a family from one generation to another; like a grandparent to the father and then the daughter and etc.
In Chinese mythology, images depicting the Tree of Life bear a phoenix and a dragon with the dragon representing immortality. Such is the fascination with immortality with people in China that a tale in Taoism tells of a tree that produces a peach every three thousand years and the person that ate the peach will live on for another three thousand years. This tree is owned by Xi Wang Mu or “the Queen Mother of the West”. She is one of the oldest figures worshipped in Chinese history.