Joseph Benson's Commentary of the Old and New Testaments - Revelation 21:1-3
Revelation 21:1-3. And I saw So it runs, Revelation 19:11; Revelation 20:1; Revelation 20:4; Revelation 20:11, in a succession. All these several visions follow one another in order, and this vision reaches into eternity; a new heaven and a new earth That is, after the foregoing visions, in which I beheld a representation of the state of the church and world to the consummation of all things, I had the final happiness of the true worshippers of God, to be enjoyed after the resurrection... read more
Albert Barnes' Notes on the Whole Bible - Revelation 21:1
And I saw a new heaven and a new earth - Such a heaven and earth that they might properly be called new; such transformations, and such changes in their appearance, that they seemed to be just created. He does not say that they were created now, or anew; that the old heavens and earth were annihilated; but all that he says is, that there were such changes that they seemed to be new. If the earth is to be renovated by fire, such a renovation will give an appearance to the globe as if it were... read more