I skimmed over it and the only evidence for claiming there's no third period is simply to point to the other two.
Like claiming the existence of Moe and Larry is proof that Curly doesn't exist.
Constantly throughout the Word of God we see that “this present evil age” is equated with suffering and pain. The age to come is depicted as an eternal rest and safety. Romans 8:16-18 explains (I will quote the NKJV),
“The Spirit Himself bears witness with our spirit that we are children of God, and if children, then heirs—heirs of God and joint heirs with Christ, if indeed we suffer with Him, that we may also be glorified together. For I consider that the sufferings of this present time [Gr.
Kairos]
are not worthy to be compared with the glory which shall [Gr.
mello or
hereafter]
be revealed in us.”
There is a constant tension throughout the New Testament in regard to the imperfection of this age and the perfection of the age to come, the temporal nature of our current age and the eternal character of the age to come. Paul is dealing a lot with the imperfection and suffering of this age and this world and is particularly highlighting the fact that this creation is not what God designed it to be. The theme is both consistent and well-defined.
The phrase “this present time” found in this reading closely corresponds with the synonymous expression “this world/age” found throughout the New Testament to describe the here-and-now. It is a saying that is normally used when contrasting the deficiency of this current life to the bliss and glory of the approaching eternal state – “the world / age to come.” In fact, Scripture only knows of two ages – “this age” and the “age to come,” Scripture make no mention of, or allowance for, any imperfect semi-glorious/semi-corrupt transitional age in-between “this present time” or age and the eternal “age to come,” as Premils argue.
In this reading, Paul is simply comparing the testing and trials that God’s people currently endure in this current life, which is plagued with all the consequences of the fall, and the joy of the eternal state when Christ comes that is totally purged of the curse. The portrayal of this age correlates with Galatians 1:4 that labels “this present time” of “sufferings” as “this present evil age.” Paul speaks of a time when “the children of God” will be “
glorified together” at His return. He assures his audience that the difficulties of this life are nothing “to be compared with the
glory which shall be revealed in us” when Christ appears. His whole focus is the glory that will be finally and eternally realized at Christ’s return.
Paul is looking forward to the day when both man and creation will be perfected and will be in total harmony and sync again. He is stressing the fact that the glory that awaits us is assured. Our bodies will indeed be raised. We will be glorified. We will be made into the image of the Lord Jesus Christ. God is successfully working towards that end. Nothing will thwart that purpose. Nothing can thwart what God is going to do for us and in us. We therefore have a great hope of perfect renewal, and being finally and eternally made into the image of Christ.
Romans 8:19-23 continues (I will quote it from the NKJV as it is more accurate):
“For the earnest expectation of the creation eagerly waits for the revealing of the sons of God (that is the glorification of fallen creation).
For the creation was subjected to futility, not willingly, but because of Him who subjected it in hope; because the creation itself also will be delivered from the bondage of corruption [Gr. phthora or decay]
into the glorious liberty of the children of God. For we know that the whole creation groans and labors with birth pangs together until now. Not only that, but we also who have the firstfruits of the Spirit, even we ourselves groan within ourselves, eagerly waiting for the adoption, the redemption of our body (that is the glorification of God elect).”
We live in a world that is burdened and broken. It is fallen because it has been ruined by sin. The Greek word interpreted “vanity” in the KJV is the Greek word
mataiotes meaning: 1) what is devoid of truth and appropriateness; 2) perverseness, depravity; 3) frailty, want of vigor. This embodies all consequences of sin on the earth. As a repercussion, it has been judged by God.
Notwithstanding, God in His providence and infinite wisdom has ordained a day when He will finally bring time, evil and the bondage of corruption to an end. This passage speaks of an approaching climactic event in history that will eventually and eternally release all creation
from a position of current anguish and despair
to a place of total liberation and relief. In fact, there can be no doubt; the central focus of this whole passage is the yearning of “the whole creation” for the day when “the creature itself also shall be delivered from the bondage of corruption into the glorious liberty of the children of God.” There is indeed a termination to the “bondage of corruption” – it is the one and only future all-consummating Coming of Christ.
There is a direct connection between the liberation of “creation” and the liberation of the “sons of God.” Both the creature and creation are waiting for “the adoption, [to wit], the redemption of our body” – or resurrection day. This is the day when both will simultaneously be delivered from the aforementioned “bondage of corruption.” The day of redemption is shown throughout Scripture to be the second coming of Christ. It is there is that man experiences the final part of redemption – the redemption of his body.