Thus, when reading the New Testament in Latin, Augustine took the word aeternus to mean unending time, rather than an indefinite period of time. His influence essentially established this definition as the standard meaning of aeternus--and as the centuries passed, this meaning came to be seen as the equivalent of the Greek word aionian.

Even so, Augustine's error was apparently pointed out to him later, but it is often difficult to correct one's teaching once that teaching has been accepted by the public. Dr. F.W. Farrar tells us of this in his book, Mercy and Judgment, p. 178,

But in Rom. 8:11 Paul went beyond this to say that even today in our mortal bodies, we have the potential to experience that future way of life to the extent that we grow to maturity and are able to exercise the authority that we have even today as we reign with Christ NOW.

Paul says that as believers, we are "under obligation" to live by the Spirit and to put to death "the deeds of the body." Many like to think that being a Christian means the freedom of having no obligations at all, for any obligation is, to them, a form of slavery. But as we have already seen from the Law of Redemption, being redeemed means only that we change masters (slave owners). We are still bondslaves of Jesus Christ.

1 There is therefore now no condemnation for those who are in Christ Jesus. 2 For the law of the Spirit of life in Christ Jesus has set you free from the law of sin and of death.

Even as we are to reckon our old Adamic identity as dead, so also are we to reckon our Christ identity as alive to God (Rom. 6:11). In practice, how does this alter our thinking?

The judgments of God are established in the law itself. In the law, there is no sin worthy of torture in a literal fire. The fire is the “fiery law” itself (Deut. 33:2). His Word is like a fire (Jer. 23:29), for its purpose is to cleanse, purify, and burn out the dross in order to bring forth a perfect, finished product. This is seen especially in the fact that the “flogging” that the second group of believers receive is spoken of in terms of “fire,” even though they are not burned in any literal sense. Luke 12:49 concludes that passage with Jesus’ statement:

49 I have come to cast fire upon the earth; and how I wish it were already kindled!

For full reading:

https://godskingdom.org/studies/books/the-restoration-of-all-things/chapter-2-universalism-vs-restorationism

The primary distinction between Universalism and Restorationism is in this matter of divine judgment. The one makes no provision for any judgment, no accountability for past actions, and makes spiritual growth unnecessary and irrelevant in the end. The other view recognizes the reality and seriousness of sin, pays its full penalty as the law demands for the ultimate reconciliation of creation, and yet saves believers by faith and unbelievers through judgments, discipline, and spiritual growth.

For the love of Christ constrains us, because WE THUS JUDGE, that if One died for all, then are all dead; 15 and that He died for all, that they which live should not henceforth live unto themselves, but unto Him which died for them and rose again.

What kind of judgment is that? He is saying that Christ died for all, or on behalf of all. Therefore, all are dead (because all are identified with Christ in His death). The result of this is that they will live no more for themselves (selfishly) but rather will live for Christ who died for them and rose again.

hat or who is it that died? It was Paul's Adamic "I" that died. Paul's connection to Adam was what brought the death sentence upon him. "Therefore, just as through one man sin entered into the world, and death through sin, and so death spread to all men" (Rom. 5:12). Paul's Adamic "I" was mortal on account of Adam's sin, because this "I" was under the authority and headship of Adam.

For a full reading :

https://godskingdom.org/studies/books/pauls-epistle-to-the-saints-in-rome-book-1/chapter-10-the-two-is

The need for restoration in the ages to come implies that the world has become corrupted and is in need of restoration. The verse also tells us that the second coming of Christ will bring about this restoration, for “the heavens must receive” Him until this time of restoration begins.

https://godskingdom.org/studies/books/the-restoration-of-all-things/chapter-1-judging-righteously