It is talking about unsaved, unbelieving who take the mark of the beast. All of these are on the fast track to hell. There is no hope of salvation for them. Here, let me share the verse, so that it is obvious:
9* And the third angel followed them, saying with a loud voice, If any man worship the beast and his image, and receive his mark in his forehead, or in his hand, 10* The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb: (Revelation 14:9,10)
The Bible says "any man" who worships the beast. Of course it has direct bearing on this discussion, since these will surely suffer eternal torment in the lake of fire. This is contrasted with those who do NOT take the mark of beast, who overcome:
4* And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
Those who worship the beast and receive his mark will suffer eternal torment and destruction in the lake of fire. But all whose name is not found written in the book of life (the unbelieving) will wind up on the lake of fire:
7* He that overcometh shall inherit all things; and I will be his God, and he shall be my son. 8* But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death. (Revelation 21:7,8)
He that overcometh (those who believe on the Lord Jesus Christ, see 1 John 5:4 "For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith.") will not spend eternity in the lake of fire. All else will.
This is what the Bible teaches. Men teach something different.
I disagree. See the links in my posts. I need not re-invent the wheel here.
It is actually ALL covered there - every scripture you mentioned that talks of the fate of the unsaved - and their context and meaning.