In the fifth mystery we contemplate the triumph of the Father at the moment of final judgement.

“Then I saw a new heavens and a new earth. The former heavens and the former earth had passed away, and the sea was no longer. I also saw a new Jerusalem, the holy city, coming down from heaven from God, beautiful as a bride prepared to meet her husband. I heard a loud voice from the throne cry out: "This is God's dwelling among men. He shall dwell with them and they shall be His people and He shall be their God who is always with them. He shall wipe every tear from their eyes, and there shall be no more death or mourning, crying out or pain, for the former world has passed away." ( Rev: 21:1-4)

John sees “a new heavens and a new earth”: it is man who is reborn in body and spirit and is therefore capable of receiving the Divinity who comes down from heaven. It is the Father – and in Him the heavens, all Paradise, the new Jerusalem – who comes to make his dwelling in the hearts of men.
It is the fullness of Life which is established in man and which eliminates everything that has to do with death (“there shall be no more death or mourning, crying out or pain”). It is the Father who comes in the Son to make “all things new” (Rev 21:5) in a new creation and who gives Life to those who want it, that is to everyone, because everyone thirsts for Life.
Finally man will acknowledge God as His Father: “He who overcomes will inherit these things; I will be his God and he will be My son” (Rev 21:7).

It is the fulfilment of the “God with us” pointed out in Scriptures.

What John “sees” in a prophecy, with the spirit’s eye, one day everyone will see: it will be the great day of the final judgement, which Matthew describes in his Gospel: “And then the sign of the Son of Man will appear in the sky, and then all the tribes of the earth will mourn, and they will see the Son of man coming on the clouds of the sky with power and great glory. And He will send forth His angels with a great trumpet and they will gather together His elect from the four winds, from one end of the sky to the other” (Mt 24:30-31).

With what kind of “power” will He come? With the Father’s power. Power is a special attribute of God the Father: “God the Father Almighty” we say in the Creed.
His power is creative, regenerative, a power of Love and Light… He will certainly not come to destroy, because the Father creates and doesn’t destroy; He will not come to punish, because the Father is Mercy; He will not come to add darkness to darkness, because the Father is a Light which generates and gives Light. He will come to “swallow up the covering which is over all peoples and the veil which is stretched over all nations” (Is 25:7) and which prevented men from seeing and thus loving Him.

We will finally see God as He is: Father, infinitely Father, who is capable only of loving and exerting His omnipotence of Love in order to overcome Satan who snatched His children from Him. He wants to bring them back to His heart; in order to give Himself totally to each one of them, so that they may become one with Himself, with the Son and with Love.

The request which Jesus taught us to make in the Our Father will finally be fulfilled: “Your Kingdom (of Love) come, Your will (of Love) be done on earth as it is in heaven”.
Heaven and earth will meet. The City of God, the new Jerusalem will take replace the Babylon without God.