True, the people who go to hell and the second death do not ever come out alive.
Are never made righteous, and suffer an eternal age enduring destruction.
Only believers are saved.
2 Thessalonians 1:7-12 New King James Version (NKJV)
7 and to give you who are troubled rest with us when the Lord Jesus is revealed from heaven with His mighty angels, 8 in flaming fire taking vengeance on those who do not know God, and on those who do not obey the gospel of our Lord Jesus Christ. 9 These shall be punished with everlasting destruction from the presence of the Lord and from the glory of His power, 10 when He comes, in that Day, to be glorified in His saints and to be admired among all those who believe, because our testimony among you was believed.
11 Therefore we also pray always for you that our God would count you worthy of this calling, and fulfill all the good pleasure of His goodness and the work of faith with power, 12 that the name of our Lord Jesus Christ may be glorified in you, and you in Him, according to the grace of our God and the Lord Jesus Christ.
The Greek word aionios, erroneously translated above as "everlasting", is the same Greek word that is often deceptively translated as eternal or everlasting at Mt.25:46.
2 Thess.1:9 is not a difficult text to reconcile with the Scriptural teaching of universal reconciliation(UR). Simply put it speaks of an indefinite duration (=aionias, often deceptively rendered eternal/everlasting) of destruction.
Therefore, whatever you understand by the word "destruction" - whether death, annihilation or ruin - the text is perfectly harmonious with UR passages of the Bible. Problem solved. Now you can rejoice in the Good News!
2Thess.1:9 Who, indeed, a penalty, shall pay—age-abiding destruction from the face of the Lord and from the glory of his might— (Rotherham)
9 who shall incur the justice of eonian extermination from the face of the Lord, and from the glory of His strength" (CLNT)
who shall suffer justice -- destruction age-during -- from the face of the Lord, and from the glory of his strength, (2 Thess 1:9, YLT)
A recent new translation by EO scholar David Bentley Hart reads: "Who shall pay the just reparation of ruin in the Age, coming from the face of the Lord and the glory of his might" (A Translation: The New Testament, 2017, Yale University Press).
Regarding the mistranslation "everlasting" or "eternal" in 2 Thess.1:9: "166 aiṓnios (an adjective, derived from 165 /aiṓn ("an age, having a particular character and quality") –
properly, "age-like" ("like-an-age"), i.e. an "age-characteristic" (the quality describing a particular age);..."
Strong's Greek: 166. ???????
(aiónios) -- agelong, eternal
A Greek lexicon at the following url states re the Greek word olethron ("destruction") at 2 Thess.1:9:
"...Hierocles 14, 451b has the thought that the soul of the sinner in Hades is purified by the tortures of hell, and is saved thereby..."
https://translate.academic.ru/ὄλεθρος/el/xx/
As does p.702 of "A Greek–English Lexicon of the New Testament and Other Early Christian Literature, 3rd ed. (BDAG)":
A Greek–English Lexicon of the New Testament and Other Early Christian Literature, 3rd ed. (BDAG)
https://www.amazon.ca/Greek-English-Lexicon-Testament-Christian-Literature/dp/0226039331
Compare that above statement to:
"In Ancient Greek mythology, Olethros was the personification of Havoc and probably one of the Makhai. Olethros translates roughly in ancient Greek to "destruction", but often with a positive connotation, as in the destruction required for and preceding renewal."
Here we see "destruction" is for the good of the person:
... deliver such a one to Satan for the destruction of the flesh, that his spirit may be saved in the day of the Lord Jesus. (1Cor 5:5)
He who is finding his soul will be destroying it, and he who destroys his soul on My account will be finding it. (Mt.10:39)
Here we see destruction was temporary:
Jesus answered them, "Destroy this temple, and I will raise it again in three days." (Jn.2:19)
"Does the eschatological destruction of 2 Thessalonians 1:9 exclude all redemptive possibilities? Nothing in the text requires such a reading." Continued at:
https://afkimel.wordpress.com/2015/02/22/book-review-the-inescapable-love-of-god-part-5/
http://evangelicaluniversalist.com/forum/viewtopic.php?f=50&t=213
Further re 2 Thess.1:9, Jason Pratt said:
"Which definitely refers to hopeful punishment (and expected salvation in the same day of the Lord to come), not annihilation, when Paul uses it to talk about handing the Stepmom-Sleeping Guy over to Satan for the whole-destruction of the flesh in 1 Cor 5:5.
"Paul compares it to a birth-pang, which is dangerous but hardly hopeless annihilation (and is generally regarded as very hopeful) at 1 Thess 5:3 (talking about the same day to come).
"Paul uses the term to describe people killed by God in the past at 1 Cor 10:10, which can hardly be annihilation unless the resurrection of the evil as well as the good is denied.
"2 Thess 1:9 uses phrases similar to those found in Isaiah 2, talking about the same coming event, which is part of a block of prophecy where those wholly ruined aren't annihilated, but eventually repent of their sins and go to the "survivors" of God's wrath to be reconciled to God, which God accepts washing them clean with spirit and with fire. (Isaiah 4.) Again, far from a result of hopeless annihilation.
"2 Thess 1 is actually one of my scriptural testimonies 'for' universal salvation."
http://evangelicaluniversalist.com/forum/viewtopic.php?f=11&t=4087
Lamentations 3:22 and 3:31-33, The steadfast love of the Lord NEVER ceases, his mercies NEVER come to an end. . . .
Lam.3:31 For the Lord will NOT cast off FOR EVER:
32 For if He causes grief, Then He will have compassion According to His abundant lovingkindness. 33 For He does not afflict willingly Or grieve the SONS OF MEN.…
Rom 5:18 Consequently, then, as it was through one offense for ALL MANKIND for condemnation, thus also it is through one just act for ALL MANKIND for life's justifying."
Rom 5:19 For even as, through the disobedience of the one man, THE MANY were constituted sinners, thus also, through the obedience of the One, THE MANY shall be constituted just."
http://www.hopebeyondhell.net/articles/further-study/eternity/