Have to say this GWT judgement is a little difficult to sort out.
So, eternal life, as described in the bible is usually actually life for an age. Universalists argue, I believe, that the saved will rule at Christ’s side during the millennium “age” and the lost will be purified in the fire for an “age”, and then they, too, will be saved.
BTW, when the bible says you shouldn’t love the things of the world, it is really saying you shouldn’t love the things of this AGE. There are lots of ages. Eternal life is really life of the ages. We don’t know if it is actually “eternal”.
But if you are truly following Christ and His teaching, that’s not why you’re doing it anyway. And if you are following because you don’t want to burn forever in terrible pain, you are definitely doing it wrong.
Regarding universalism, BTW, I’m just starting to study it. I’m not a universalist. Well, not yet. We’ll see if I change my mind after studying it.
Universalism is blasphemy. Eternal is eternal. The saved will rule and reign with Christ in the Millennial Kingdom and after the GWTJ where all unbelievers are thrown into the Lake of Fire for all eternity, the saved will reside in the Eternal State forever. There is no purgatory and no one is “purified” in the Lake of Fire. They are tormented forever.