@Blotty
I was very interested in your initial study of αιων. I have also been thinking lately about the concepts of time and especially in Revelation. Those terms like "fast", "near", "hour", "day", "month", "year" or "time" or "definite time" are pretty important.
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So I focused on how "ordinary" people, understood the concept of αιων according to the NT. I found that in looking at the future, they understood it as some very long epoch, almost infinity: "we know from the Law that Christ abides forever" (John 12:34). A slightly different meaning can be found in looking at the past: 'since the beginning of time it has not been heard that, since the birth of the blind, anyone has opened his eyes' (John 9:32) - here we could say poetically: 'as far back as the memory of mankind goes, it has not been heard that, since the birth of the blind, anyone has opened his eyes'.
Therefore, unless it is clear from the context that αιων is limited (see e.g. "will not see death for ever "John 8:51 = "will not taste death for ever" John 8:52 => which actually means that the person will not be eternally dead, but his state of death will be changed: by resurrection to life. That is why Martha, in her dialogue with Jesus, says of her brother Lazarus that he will be resurrected on the last day, and Jesus confirms it: 'everyone who lives and believes in me will certainly not remain eternally dead' John 11:26; which, again in other words: the αιων of death will end 'on the last day'), it is necessary to add that the αιων somehow (does not) end => ".. will reign over the house of Jacob forever, and his kingdom will have no end" (Luke 1:33).
Theologically interesting is the passage in John 14:16 in which Jesus promises that the "parakletos" will be with us "for ever", which in terms of Revelation means that this period too will one day come to an end.
The apostles' question about when the end of the ages would come (Matt. 24:3), which again assumes that the ages are limited, so this question, I believe, was inspired by the same concept Jesus used in his parable (Matt. 13:39, 40, 49) about destroying the "tares" Satan had planted among the sons of God. And if this age is to have any end, there must be a future age, an idea we find confirmed in Mat 12:32.
Paul's position is interesting: he uses the term αιων also in the sense of a long age, an epoch, (Paul says in a slight exaggeration that for the sake of a brother weak in the faith he will not eat "meat forever," 1 Cor 8:13) but the idea appears there that this age, this epoch, which will also end, has some content. Hence, it is not surprising to hear his appeal that we should "not have the same scheme" as this αιων (Rom 12:2), but that there should be a continual renewal of our transformation...
The Αιων, then, has a scheme, a content, and that is the κοσμος (1 Cor 1:20), or the reverse: the κοσμος has its αιων, its age begun.
When? This is suggested by another writer: by Peter (2 Peter 2:5), when he speaks of the "old κοσμος" which was destroyed by the flood (2 Peter 3:6), by which we may say that the "age" of this "world," this κοσμος, has begun.
Returning to Paul, the close connection between κοσμος and αιων is demonstrated by Paul in yet another statement, "lest we walk (under the influence of) the age (αιων) of this world (κοσμος)" Eph. 2:2. Why? Because the "scheme" of this κοσμος is changing (1 Cor 7:31). The circle has come full circle.
Jesus' bodily coming to earth and His death is part of the (slow) end of the age (Heb 9:26 cf. 1 Cor 10:11), but the important point is that the "end" is gradually coming to pass, which is why Paul speaks several times of His "present" age (1 Tim 6:17; 2 Tim 4:10; Tit 2:12) If the Jewish αιων ends in 70 AD, then it is not the eschatological end of the ages, this eschatological age is ongoing (Eph. 1:21) and therefore there must be a future age yet to come. The eschatological αιων endures to its eschatological end, because Satan, the god (θεος with definite article! ) of this age (2 Cor. 4:4), acts upon men, the αιων has its chief ruler (Eph. 2:2) and its, shall we say, subsidiary rulers (1 Cor. 2:6-8).
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The question then is how do I view Heb 1:2 with this finding? If John says in Rev 15:3 that God Almighty, is the (de facto) king of the ages. And if, God, the King of the Ages, made the ages through Jesus, then what are the ages (plural) in Heb 1:2?
As I wrote above, I believe there is a close connection between αιων and κοσμος in the case of Heb 1:2. According to the Septuagint and the translation of Gen 2:1, God created κοσμος. He began αιων, which ends with the flood and the destruction of the then world. In righteous Noah and his descendants, in Abraham and others, another αιων continues. And we await the beginning of the end of the eschatological age with the general resurrection and final judgment after the 1000 years of Christ's reign.
So we can calculate and contemplate various epochs, for example, from Creation to the Flood, from the Flood to Christ, from Christ including the 1000 years of his kingdom to the final judgment and descent, the New Jerusalem of the new heavens and new earth.
Paul hints a little about these ages in 2 Cor 12:2 and 4 , where he identifies the "third heaven" with "paradise" (v. 4) - see the promise of a symbolic Paradise in Rev 2:7 for all co-regents with Christ.
My understanding is that there must therefore be three heavens, for Rev 21:1 speaks of a "new heaven", saying that the "first" heaven (and earth) has passed away. At the same time, Rev. 21:2 says that the new Jerusalem came down out of heaven from God. So how can the "new" descend from something that already is? My understanding is that the heavens are cleansed at the latest by the victorious battle of Rev 12:8-12, but at the time, the symbolic earth is still experiencing woe. However, if the first heaven left after the 1000 year reign, then a new, de facto, third "heaven" must descend from the "second" heaven, from God.
Conclusion: Heb. 1:2 would suggest to me, then, that God has made all the ages and worlds to date through Jesus, and though they have been alienated by Satan, who has taken over the world and its age for the time being (he is the false "heir"), yet the foundation for a new world and a new age has already been laid by the death of Christ... which is why Heb. 1:2 can be written by Paul in the plural of age.