Good question.
Eternal life is living forever.
Perishing.............Is dying forever.
REV 14:11 - “the smoke of their torment ascends up for ever and ever and they have no rest day or night.”
Rev 21:4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.
Either the torment is pain and suffering that lasts for ever which controdicts Rev 21.
Or the it is referring to the everlasting effect of death, no rest from death, forever dead.
Or the punishment that lasts for a time...
The word "ever" used in chap 14, is...
AION..
for ever, an unbroken age, perpetuity of time, eternity
the worlds, universe
period of time, age
Origin: from the same as G104
Strong's Definition: From the same as G104; properly an age ; by extension perpetuity (also past); by implication the world ;
an age or time.. sure it can mean eternity but then it controdicts the other verses.
A time is more accurate.
Like Jude 7...
Jud 1:6-7
6 And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day. 7 Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.
This is referring to " the judgement of the last day".
Sodom and Gomorrha were used to compare, and it was said "suffering the vengeance of eternal fire"..
Eternal fire.. they are not burning today.
The Dead Sea rolls over the place where those ancient cities once stood. Yet they burned with "eternal fire," and we are told that it was an example of something. What is it an example of? "And turning the cities of Sodom and Gomorrha into ashes condemned them with an overthrow, making them an ensample unto those that after should live ungodly." 2 Peter 2:6.
There it is! That eternal fire which brought Sodom to ashes is an example of what will finally happen to the wicked.