The ceremonial use of lights occurs in liturgies of various Christian Churches, as well as in Jewish, Zoroastrian and Hindu rites and customs. Light is everywhere the symbol of joy and of life-giving power, as darkness is of death and destruction. Fire as an impressive element in worship has been used in many religions. Fire-worship still has its place in at least two of the great religions of the world. The Parsis adore fire as the visible expression of Ahura Mazda, the eternal principle of light and righteousness; the Hindus worship it as divine and omniscient. One of the most popular festivals of Hinduism, Diwali (from the Sanskrit dīpāwali meaning "row or series of lights") symbolizes the spiritual "victory of light over darkness, good over evil, and knowledge over ignorance".