OR, hell could be eternal suffering in fire as noted in the Bible.
With all due respect, you seem to have some very major misunderstandings about the concept of Hell and the scriptures you have referenced.
I’m not trying to sound sanctimonious, but I do believe that I have a “particular set of skills” (name that movie!) that can help you gain a better understanding.
Most of which consist of actually reading the text and not quoting it out of context.
For example, you quoted Revelation 20:10 in a failed attempt to refute my claims that Hell is a temporary condition and that God's plan is fair.
If you had read the chapter in it's entirety you would see your error.
Revelation 20:10 reads (from the KJV),
"And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever."
First off, this verse is speaking about the fate of the devil - no one else. What makes you assume that this fate applies to everyone that "goes to" Hell?
Also, you quoted this while falsely assuming that this reference to the "lake of fire and brimstone" was a reference to Hell. The verses almost immediately following the one you quoted prove that notion false;
"And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.
And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works.
And death and hell were cast into the lake of fire. This is the second death." (Revelation 20:12-14) (Bold and italics added)
These verses claim that Hell shall "deliver up" the dead contained therein before they are to be judged. The condition of Hell has an end before we receive our Final Judgment. It is temporary.
Then the next verse claims that both death and hell shall be "cast into the lake of fire", proving not only that the condition of Hell is temporary (as I claimed) but also that the "lake of fire" mentioned in the verse you quoted (v.20) is NOT a reference to Hell.
According to the verse you quoted, after the Final Battle the devil will be cast into a "lake of fire" (which is not Hell) and he will be tormented there forever.
This "lake of fire", which is also referred to as the "bottomless pit" (v.3) and the "second death" (v.14) in this very same chapter is the "Outer Darkness" often referred to in the scriptures.
It is the space outside of God's Kingdom from where there is no return. It is not Hell. Hell is a temporary condition placed upon the unrepentant while they await the time of their resurrection before the Final Judgment.
Revelation 21:8 (the other verse you quoted out of context) also does not refer to Hell when it calls the place the "lake which burneth with fire and brimstone" and the "second death".
Both are references to Outer Darkness.
You tried to apply what the scriptures say about the fate of the devil (Lucifer/Satan) to everyone who will spend time in Hell. That is false doctrine.
You tried to equate the condition of Hell with this "lake of fire and brimstone" and the "second death" when other verses in the same chapters refute that idea.
I don't know what led you to these errors, but I hope you avoid spreading these false ideas in the future.
Now, take notice of these verses,
"Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the
blasphemy against the Holy Ghost shall not be forgiven unto men.
And whosoever speaketh a word against the Son of man, it shall be forgiven him: but whosoever speaketh against the Holy Ghost, it shall not be forgiven him, neither in this world, neither in the world to come." (Matthew 12:31-32)
The devil (Lucifer/Satan) has committed this sin against the Holy Ghost, therefore he will not receive forgiveness and will eventually be cast into Outer Darkness.
Any mortal who commits this sin against the Holy Ghost will also be cast out. I wouldn't worry about committing this sin because it would first require you to have a perfect knowledge of God and His Christ before you could commit it.
Thank goodness for faith!
So, according to the Lord Jesus Christ, all other sins and blasphemies will eventually be forgiven. The sinner may need to spend some time in Hell, but they will be forgiven as long as they did not commit the sin against the Holy Ghost.