Where does it say that God eternally tortures those who offend him?
In the NT ─
Paul arguably favors the idea that the wicked and the unbelieving are destroyed, not punished ─
Romans 2:9 There will be
tribulation and distress for every human being who does evil, the Jew first and also the Greek,
and to grant rest with us to you who are afflicted, when the Lord Jesus is revealed from heaven with his mighty angels in flaming fire,
And the most likely pseudipigraphical author of 2 Thessalonians is a 'destruction' man ─
2 Thessalonians 8 inflicting vengeance upon those who do not know God and upon those who do not obey the gospel of our Lord Jesus.9
They shall suffer the punishment of eternal destruction and exclusion from the presence of the Lord and from the glory of his might,
Mark is pro-hell, and specific about its everlasting quality ─
Mark 9:43 If your hand causes you to sin, cut it off. It is better for you to enter into life maimed, rather than having two hands,
to go to hell, into the fire that shall never be quenched.
45 And if your foot causes you to sin, cut it off. It is better for you to enter life lame, rather than having two feet, to be cast into hell,
into the fire that shall never be quenched.
47 And if your eye causes you to sin, pluck it out. It is better for you to enter the kingdom of God with one eye, rather than having two eyes,
to be cast into hell fire.
On the other hand, the examples are outright silly, so perhaps the argument is available that he uses hell only as a rhetorical device, and not as a supernatural establishment,
Matthew is fond of hell too . He repeats Mark and adds more of his own. He doesn't specify that hell is eternal, but he never mentions a post-hell condition either.
Matthew:5:22 But I say to you that whoever is angry with his brother without a cause shall be in danger of the judgment. And whoever says to his brother, ‘Raca!’ shall be in danger of the council.
But whoever says, ‘You fool!’ shall be in danger of hell fire.
5:29 If your right eye causes you to sin, pluck it out and cast it from you; for
it is more profitable for you that one of your members perish, than for your whole body to be cast into hell.
10:28 “And do not fear those who kill the body but cannot kill the soul.
But rather fear Him who is able to destroy both soul and body in hell.
11:23
And you, Capernaum, who are exalted to heaven,
will be brought down to hell; for if the mighty works which were done in you had been done in Sodom, it would have remained until this day.
16:18 And I also say to you that you are Peter, and on this rock I will build My church, and
the gates of hell shall not prevail against it.
18:9 And if your eye causes you to sin, pluck it out and cast it from you. It is better for you to enter into life with one eye,
rather than having two eyes, to be cast into hell fire.
23:15 Woe to you, scribes and Pharisees, hypocrites! For you travel land and sea to win one proselyte, and
when he is won, you make him twice as much a son of hell as yourselves.
23:33 Serpents, brood of vipers!
How can you escape the condemnation of hell?
Luke mentions hell but only briefly and perhaps metaphorically:
Luke 10:15 And you, Capernaum, who are exalted to heaven,
will be brought down to hell.
12:5 But I will warn you whom you should fear:
fear him, who, after he has killed, has power to cast into hell.
16:23
And being in torments in hell, he lifted up his eyes and saw Abraham afar off, and Lazarus in his bosom.
But Luke is also a death is the end man, the 'destruction' school:
Luke 13:3 I tell you, no; but unless you repent you will
all likewise perish.
As is John:
John 3:16 For God so loved the world that he gave his only Son, that whoever believes in him
should not perish but have eternal life.
It's a good idea to bear in mind the fundamentals of salesmanship here. These include the technique which works thus :
Gather round ladies and gentlemen, I have some terrible news, truly appalling.
You are all going to burn in hell forever [or as the threat may be] and there's nothing that anyone can do about it, NOTHING!
Except, very fortunately, I've discovered the one remedy.
And very fortunately again, I'm able to bring it to you at a very reasonable price.
I even have some with me, enough for the first few lucky buyers.
Yes, oil extracted from various serpents ...