Upon the wicked He will rain snares; Fire and brimstone and burning wind will be the portion of their cup. (Psalm 11:6)
You will make them as a fiery oven in the time of your anger; The LORD will swallow them up in His wrath, And fire will devour them. (Psalm 21:9)
For behold, the LORD will come in fire And His chariots like the whirlwind, To render His anger with fury, And His rebuke with flames of fire. (Isaiah 66:15)
For the LORD will execute execute judgment by flames of fire. And those slain by the LORD will be many. (Isaiah 66:16)
"And His winnowing fork is in His hand, and He will thoroughly clear His threshing floor; and He will gather His wheat into the barn, but He will burn up the chaff with unquenchable fire." (Matthew 3:12)
"And the smoke of their torment goes up forever and ever; and they have no rest day and night, those who worship the beast and his image, and whoever receives the mark of his name." (Revelation 14:11)
"The Son of Man will send forth His angels, and they will gather out of His kingdom all stumbling blocks, and those who commit lawlessness, and will cast them into the furnace of fire; in that place there shall be weeping and gnashing of teeth. (Matthew 13:41-42)
"But for the cowardly and unbelieving and abominable and murderers and immoral persons and sorcerers and idolaters and all liars, their part will be in the lake that burns with fire and brimstone, which is the second death." (Revelation 21:8)
"And if your eye causes you to stumble, cast it out; it is better for you to enter the kingdom of God with one eye, than having two eyes, to be cast into hell, where THEIR WORM DOES NOT DIE, AND THE FIRE IS NOT QUENCHED. (Mark 9:47-48)
And these will pay the penalty of eternal destruction, away from the presence of the Lord and from the glory of His power, (2 Thessalonians 1:9)
So we have the following going on.
rains of snares
fire and brimstone
burning wind
fiery oven
devouring fire
God's anger with fury
flames of fire.
judgment by flames of fire
slaying by the lord
unquenchable fire
smoke of torment
no rest day and night,
casting into the furnace of fire
second death
eternal destruction
the worm wont be dying
.
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The Scriptures you quote refer to the destruction of the wicked. God used fire and sulphur to destroy Sodom and the surrounding cities. Note that eternal destruction is the outcome for the wicked, according to 2 Thessalonians 1:9. Revelation 21:8 speaks of a symbolic lake of fire "which is the second death", from which no resurrection is possible. That this lake is not literal is clear from what else ends up there; "death and the grave" according to Revelation 20:14. Regarding the scripture you quote at Mark 9:48, note this quote from the Catholic work
El evangelio de Marcos. Análisis lingüístico y comentario exegético, Volume II: “[The] phrase is taken from
Isaiah (66,24). There the prophet shows the two ways corpses were usually destroyed: putrefaction and incineration . . . The juxtaposition in the text of maggots and fire reinforces the idea of destruction. . . . Both destructive forces are described as permanent (‘is not quenched, does not die’): there is simply no way to escape them. In this image, the only survivors are the maggot and the fire—not man—and they both annihilate anything that falls within their power. Hence, this is not a description of everlasting torment, but one of total destruction which, as it prevents resurrection from occurring, is tantamount to final death. [Fire] is, then, a symbol of annihilation.”