In the image above, we see Moses and the burning bush. God appears to Moses as fire. A story from Bible Pictures and What They Teach Us (1897) describes the scene:
Moses has grown up to be a man. Now he is a shepherd, and takes care of sheep. He has taken his sheep up on a mountain to eat the grass there. He sees a fire burning in a bush. He comes toward it to look at it. He hears a voice speaking to him. It is God’s voice speaking out of the fire to Moses. And Moses hides his face, for he is afraid to look upon God.”
Carl Jung speaks to fire as an attribute of the deity.
“Fire… is a well-known attribute of the deity, not only in the Old Testament, but also as an allegoria christi in non-canonical logion, mentioned in the Homilies of Origenes… ‘Whoever is near to me is near to the fire; whoever is far from me as far from the kingdom’.” Since Heraclitus, life has been figured as.. an internal living fire, and as Christ designates himself as The Life, the noncanonical saying is understandable, even credible.” –
- Carl Jung, Psychology and Religion, 1938, p. 44