Knotted Celtic Tree of Life Silver Pendant with its branches and roots forming a circle, no beginning, no end. Tree of Life and trees in general carry a deep sacred meaning in many world religions and mythologies. Human beings, observing the growth and death of trees, and the annual death and revival of their blooms and foliage, have often seen them as powerful symbols of growth, death and rebirth. Evergreen trees are sometimes considered symbols of the eternal and immortality. Sacred or symbolic trees include the banyan and the sacred fig (Hinduism and Buddhism), the tree of knowledge (Judaism and Christianity) and sacred oak groves (Germanic and Celtic mythologies).