Addressing the OP only, intresting post. but there are several kinds of fire.
example, your Isaiah 33:10-14 you posted.
1 Corinthians 3:11 "For other foundation can no man lay than that is laid, which is Jesus Christ.
1 Corinthians 3:12 "Now if any man build upon this foundation gold, silver, precious stones, wood, hay, stubble;
1 Corinthians 3:13 "Every man's work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is.
1 Corinthians 3:14 "If any man's work abide which he hath built thereupon, he shall receive a reward.
1 Corinthians 3:15 "If any man's work shall be burned, he shall suffer loss: but he himself shall be saved; yet so as by fire".
also in reference to the above verse, it was with the two witness as to how if, "any man will hurt them, he must in this manner be killed", meaning, "fire proceedeth out of their mouth, and devoureth their enemies". but this is not natural fire, but the word of God. scripture,
Jeremiah 5:13 "And the prophets shall become wind, and the word is not in them: thus shall it be done unto them.
Jeremiah 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".
for God id a refining fire. Malachi 3:2 "But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fullers' soap".
not saying that you're right or wrong here, but not all fire is a destroying fire, of sin, yes. but the same fire that burn the wicked can save. just an oponion.
PICJAG.