Because "Godly fire" purifies good by destroying bad. The proverbial wheat and chaff; the chaff being devoured by fire. The indwelling of God(love: 1 John 4:8) through the Word of God(which is God: John 1:1) purifies, burning away all that is not of love. Words are used as fire which purifies: which is why we see fire proceeding out of mouths in apocalyptic and prophetic literature:
De 5:5 (I stood between the LORD and you at that time, to shew you the word of the LORD: for ye were afraid by reason of the fire, and went not up into the mount)
Jer 23:29 Is not my word like as a fire? saith the LORD;
Lu 12:49 I am come to send fire on the earth; and what will I, if it be already kindled?
Isa 30:27 Behold, the name of the LORD cometh from far, burning with his anger, and the burden thereof is heavy: his lips are full of indignation, and his tongue as a devouring fire:
Jas 3:5-6 Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth! And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell.
Jas 3:10 Out of the same mouth proceedeth blessing and cursing.
Jer 5:14 Wherefore thus saith the LORD God of hosts, Because ye speak this word, behold, I will make my words in thy mouth fire, and this people wood, and it shall devour them.
Re 11:5 And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies:
Re 9:17-18 and out of their mouths issued fire and smoke and brimstone. By these three was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths.
Interesting reply. There are definitely different aspects of fire that I think can represent different ways that God acts. Another thing that I would add is that fire is a very intense thing, which probably represents the intensity of God's power or maybe the intensity of his morality. Fire is also certainly powerful and that can represent the morality of God.
From Zoroastrianism - Wikipedia
In Zoroastrianism, water (apo, aban) and fire (atar, azar) are agents of ritual purity, and the associated purification ceremonies are considered the basis of ritual life. In Zoroastrian cosmogony, water and fire are respectively the second and last primordial elements to have been created, and scripture considers fire to have its origin in the waters. Both water and fire are considered life-sustaining, and both water and fire are represented within the precinct of a fire temple. Zoroastrians usually pray in the presence of some form of fire (which can be considered evident in any source of light), and the culminating rite of the principle act of worship constitutes a "strengthening of the waters". Fire is considered a medium through which spiritual insight and wisdom is gained, and water is considered the source of that wisdom.
I think that it's incorrect to go to another religion to find out why fire symbolizes God. I think that we either have to think about the nature of fire itself or what's said in the Bible.
Symbolism can carry across culture and religions. I am convinced that Judaism and Christianity has borrowed much from nearby nations particularly Persia, Egypt and Greece.
So you believe that the OT was written by human authors, then, and not divinely inspired?
I am not convinced that scripture sets up fire to be a symbol of God. I do acknowledge that God has come with fire on occasion. More times though, he has come in human appearance.
If one wishes to make an association of fire to God, the best would be the sun, which many religions have worshiped; the sun being the greatest, brightest, warmest fire all on earth can see. It sustains our life, yet we take it for granted.
There are numerous comparisons of the glory of God to the sun and that God does shine on us and Jesus is the light of the world. If even angels shine so brightly, then even more so of God.Has God ever been associated with the Sun in Scripture?
Off hand, I can't recall a passage that makes that association.
I would say there is a much stronger association and comparison of God with the sun/bright light as I have quoted and there are many more. Feel free to quote scripture and explain a stronger association of God to fire and answer your OP question.So then why is fire so often associated with God in Scripture? There's unquestionably a common theme here throughout all of Scripture.