KathaUpanishad

Agni the Hindu deity of fire, has a very prominent place among Rigvedic deities.
In Hinduism, fire is one of five sacred elements of which all living creatures are
comprised and is considered an eternal witness essential to sacred religious
ceremonies.
In Christianity, fire is a symbol of the Holy Spirit and is often used in many descriptions
of Hell.
Fire & Early Science
The ability to make, build and ignite fire was undoubtedly the single most important
discovery that enabled the civilization of human beings. By learning to use fire, people
gained a decisive advantage over all other species, and indeed over other human
communities that had not taken part in this learning. Fire made it possible for people to
populate land in the colder regions of the earth. Fire produced light and provided
protection. Fire enabled food to be cooked and for human beings to benefit from a wide
range of nutrients. Fire made it possible for the science metallurgy to develop. The
understanding of the transformative nature of fire as well as how fire could transform
nature marked the beginnings of a systematic exploration of the workings of nature. The
cosmic laws of the universe, asha, were symbolized by fire.
In the Zoroastrian religion, fire is constantly used to represent Ahura Mazda, or God of
the Zoroastrians, including the fire at Yazda, which has been burning for over two
millennia.
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