Are you being "willingly ignorant"?
Jesus Himself is that Eternal flaming and consuming fire.
Jesus is not the fire he comes in. It's specifically flashes of lightning and is not something used by him as a weapon. The only weapon ever described that kills people is a symbolic sword from his mouth.
He comes so fast and brightly the description of lightning is used. He doesn't send down lightning bolts or anything. He comes in flaming fire not casts out flaming fire. The same exact thing is here:
Mat 24:27 For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be.
It's about the speed because lightning was the fastest thing man knew of in those days. This essentially is "light speed" and is what this verse is talking about:
2Th 1:8 In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:
Barnes:
In flaming fire - This is a circumstance which is not noticed in the account of his appearing in the parallel place in 1Th_4:16.
The object of the apostle here seems to be to represent him as coming amidst vivid flashes of lightning. He is commonly described as coming in clouds, and to that common description there is here added the image of incessant lightnings, as if the whole heavens were illuminated with a continued blaze.
It means a flash of lightning.
2Th 1:7 And to you who are troubled rest with us, when the Lord
Jesus shall be revealed from heaven with his mighty angels,
2Th 1:8
In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:
G4442
????
pur
poor
A primary word; “fire” (literally or
figuratively, specifically lightning): - fiery, fire.
Total KJV occurrences: 74
Luke spoke of the same lightning when Christ would be revealed from heaven:"
Luk 17:24 For as
the lightning, that
lighteneth out of the one part under heaven, shineth unto the other part under heaven;
so shall also the Son of man be in his day.
G796
?????????
astrape?
as-trap-ay'
From G797;
lightning; by analogy glare: - lightning, bright shining.
Total KJV occurrences: 9
G797
??????????
astrapto?
as-trap'-to
Probably from G792;
to flash as lightning: - lighten, shine.
Total KJV occurrences: 2
Paul was speaking of lightning not fire like when something is burning.