Ouroboros

The tree of life has been represented by a number of cultures and religions across the world. Also known as the World Tree, the tree of life is associated with birth, life, death and rebirth the circle of life.In Christianity, the tree is known to be in the garden of Eden where Adam and Eve picked the forbidden fruit from.
Ouroboros derives from a Greek word meaning “tail-devourer.” While the word is not attested in English until the 1940s, the concept of the ouroboros is very ancient, used across many cultures as a symbol of cosmic harmony, eternity, and the cycle of birth and death.