The New Age immediately follows the Great White Throne Judgement.
For as in Adam all die, so also in Messiah shall all be made alive. But each in his own order: Messiah, then the First Fruits, then at His appearance those who belong to Messiah. Then comes the end, when He hands over the Kingdom to God, His Father, after He has destroyed all dominion, authority and power. For He must reign until He has put all His enemies under His feet. The last enemy to be destroyed is Death. Now when it says that 'everything' has been put under Him, it is clear that this does not include God himself, who put everything under Messiah. When He has done this, then the Son himself will be made subject to Him who put everything under Him, that God Almighty may REIGN SUPREME!
For behold, I create new heavens and a new earth; the former things shall not be remembered or come to mind. But be glad and rejoice for ever in that which I create; for behold, I create Jerusalem a rejoicing, and her people a joy. I will rejoice in Jerusalem and be glad in my people; no more shall be heard the sound of weeping and cry of distress. No more shall be in it an infant that lives but a few days or an old man that does not fill out his days, for the child shall die 100 years old, and the sinner a hundred years old shall be accursed!" "Before they call I will answer, while they are yet speaking I will hear. The wolf and the lamb shall feed together, the lion shall eat straw like the ox; the dust shall be the serpent's food. They shall not hurt or destroy in all my holy mountain says Yahweh!
Isaiah 65:17-25
For as the new heavens and the new earth which I will make shall remain before me, says Yahweh, so shall your descendant's and your name remain! From new moon to new moon, and from sabbath to sabbath, all flesh shall come to worship before me, says Yahweh! And they shall go forth and look on the dead bodies of the men that have rebelled against me; for their worm shall not die, their fire shall not be quenched, and they shall be an abhorrence to all flesh!
Then I saw a new heaven and a new earth for the first heaven and the first earth had passed away, and the sea was no more. And I saw the holy city new Jerusalem coming down out of heaven from God, prepared as a bride adorned for her husband; and I heard a great voice from the throne saying: "behold, the dwelling of God is with men. He will dwell with them, and they shall be his people, and God himself will be with them,
Revalation 21:1-3