1 And he shewed me a pure river of water of life, clear as crystal, proceeding out of the throne of God and of the Lamb. 2 In the midst of the street of it, and on either side of the river, was there the tree of life, which bare twelve manner of fruits, and yielded her fruit every month: and the leaves of the tree were for the healing of the nations. 3 And there shall be no more curse: but the throne of God and of the Lamb shall be in it; and his servants shall serve him: 4 And they shall see his face; and his name shall be in their foreheads. 5 And there shall be no night there; and they need no candle, neither light of the sun; for the Lord God giveth them light: and they shall reign for ever and ever. 6 And he said unto me, These sayings are faithful and true: and the Lord God of the holy prophets sent his angel to shew unto his servants the things which must shortly be done. 7 Behold, I come quickly: blessed is he that keepeth the sayings of the prophecy of this book. 8 And I John saw these things, and heard them. And when I had heard and seen, I fell down to worship before the feet of the angel which shewed me these things. 9 Then saith he unto me, See thou do it not: for I am thy fellowservant, and of thy brethren the prophets, and of them which keep the sayings of this book: worship God. 10 And he saith unto me, Seal not the sayings of the prophecy of this book: for the time is at hand. 11 He that is unjust, let him be unjust still: and he which is filthy, let him be filthy still: and he that is righteous, let him be righteous still: and he that is holy, let him be holy still. 12 And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be. 13 I am Alpha and Omega, the beginning and the end, the first and the last. 14 Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city. 15 For without are dogs, and sorcerers, and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie. 16 I Jesus have sent mine angel to testify unto you these things in the churches. I am the root and the offspring of David, and the bright and morning star. 17 And the Spirit and the bride say, Come. And let him that heareth say, Come. And let him that is athirst come. And whosoever will, let him take the water of life freely. 18 For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book: 19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book. 20 He which testifieth these things saith, Surely I come quickly. Amen. Even so, come, Lord Jesus. 21 The grace of our Lord Jesus Christ be with you all. Amen.
[AD 990] Oecumenius on Revelation 21:26-22:5
He says, But nothing common shall enter into it, nor anything which causes abomination, but only those who are written in the book of life: for “what fellowship has light with darkness,” or a sinner with the righteous people of God? They are separated by a great chasm, the Lord told us in the gospels. He says,
Then he showed me a river of the water of life, bright as crystal, flowing from the throne of God and of the Lamb through the middle of the street of the city. A river of life would be the rich and abundant graces of Christ, which have unceasingly been shed on the saints and are borne along like a river and flowing over them.
He says, On either side of the river was a fruitful tree of life bearing fruit each month: the Lord is the tree of life according to what the writer of Proverbs says about wisdom; he says, “She is a tree of life to those who lay hold on her,” and wise Paul told us, “Christ is the power of God and the wisdom of God.” He means that not only are the saints enriched by Christ’s gracious gifts, but they also have him dwelling in them and with them, which is the crown of highest bliss. Christ, the tree of life, produces for the saints continuous and uninterrupted fruit and gifts, so that honor follows on honor and they are never without the divine flow of gifts.
He says, And the leaves of the tree were for the healing of the nations: the leaves of life are those who are dependent on Christ and hold close to him—patriarchs, prophets, apostles, evangelists, martyrs and confessors, those who at the right time perform the priestly service of the gospel, pastors of the church, and every righteous soul; all these have now found healing for their souls, and all good things will be added to the saints.
He says, There shall be nothing accursed any more: for at present even though the accursed things are very much in flight, nevertheless we are constantly embroiled in them, as thousands of occasions [for sin] arise in us, both knowingly and in ignorance; but then the saints will be pure and free from every defilement of both soul and body.
He says, And the kingdom of God will be in the city: for this is the throne.
He says, And the saints shall worship him with a worship that is not burdensome, but a worship of pleasure and spiritual joy. This will result from their beholding his face,
for, he says, they shall see his face: they shall see him insofar as he is accessible to human nature.
He says, And his name shall be on their foreheads: the present saying symbolizes God’s unceasing remembrance of them and communion with them. For since God is imposed and inscribed on them, he will always be present with the saints. This is clear, too, from what Paul said, “And we shall always be with the Lord.”
He says, And there is no more night, as the saints have no need of the light of the sun or of a lamp, when the divine light gives unceasing illumination.
And they, that is, the saints, shall reign for ever: wisest Daniel bears witness to this, saying, “The saints of the Most High shall receive the kingdom and possess it for ever and ever.”