As far as I know, this is the complete list of verses that could understandably be thought to teach a punishment of everlasting conscious suffering.
In order of appearance (and
without context!):
1.
Isaiah 66:24 Then they will go forth and look on the corpses of the men Who have transgressed against Me. For their worm will not die And their fire will not be quenched.
2.
Daniel 12:2 Multitudes who sleep in the dust of the earth will awake: some to everlasting life, others to shame and everlasting contempt.
3.
Matthew 18:18 It is better for you to enter life maimed or lame, than to have two hands or two feet and be thrown into the eternal fire.
4.
Matthew 25:41 Depart from me, you who are cursed, into the eternal fire prepared for the devil and his angels.
5.
Matthew 25:46 These will go away into eternal punishment, but the righteous into eternal life.
6.
Mark 9:44 ... into the unquenchable fire* where 'Their worm does not die and the fire is not quenched.'
(*Note: The verse change actually occurs there in what seems to be the middle of the sentence. There is also apparently some question about the authenticity of this verse and the next.)
7.
Mark 9:46 ...where 'Their worm does not die and the fire is not quenched.'
8.
Mark 9:48 ...where 'Their worm does not die and the fire is not quenched.'
(Note: The previous three are repeats, and of course they all quote #1 above.)
9.
2 Thessalonians 1:9 ... They will be punished with everlasting destruction and shut out from the presence of the Lord and from the majesty of his power.
(Note: If this verse is used, then only certain translations that add extra words and/or punctuation, such as the NIV shown here, will be used.)
10.
Revelation 14:11 ...and the smoke of their torment rises for ever and ever. There is no rest day or night for those who worship the beast and his image, or for anyone who receives the mark of his name.
11.
Revelation 20:10 ... and the devil who deceived them was thrown into the lake of fire and brimstone, where the beast and the false prophet are also; and they will be tormented day and night forever and ever.
That would be the case for the traditional view, I think. (If there are more, I would like to know.) Close examination and context is not the traditionalists' friend, imo.
This equip.org article by a Robert A. Peterson is as good a case for eternal conscious punishment as any I've come across. While making his case, he attempts to present and refute an annihilationist response. I appreciate the good faith effort, and I think he does a fine job of briefly explaining the weaknesses of annihilationism (my preferred view). He doesn't discuss universal reconciliation.
I sure do look forward to Steve's book. I hope it's still in the works (but that's okay if not

). I reckon it will present the best possible honest case for the various views, and that will be neat.
Edited: As I find other verses that anyone uses for ET (within reason), I will add them here.