He who sits on the throne said, “Behold, I am making all things new.” The One who sits on the throne is the same One “from whose presence earth and heaven fled away, and no place was found for them” (20:11). As noted in chapter 17 of this volume, the present universe will be uncreated. The new heaven and the new earth will be truly a new creation, and not merely a refurbishing of the present heaven and earth. In that forever new creation, there will be no entropy, no atrophy, no decay, no decline, and no waste.
Overwhelmed by all that he had seen, John seems to have lost his concentration. Thus, God Himself, the glorious, majestic One on the throne said to him “Write, for these words are faithful and true” (cf. 1:19). The words John was commanded by God to write are as faithful and true (cf. 22:6) as the One revealing them to him (3:14; 19:11). Though the present “heaven and earth will pass away,” still God’s “words will not pass away” (Luke 21:33). There will be an end to the universe, but not to the truth God reveals to His people. Whether or not men understand and believe that truth, it will come to pass.
MacArthur New Testament Commentary
5 Now, for the second time in the book, God himself is the speaker (cf. 1:8). From his throne comes the assurance that the one who created the first heaven and earth will indeed make all things new (panta kaina, GK 4246, 2785). This is a strong confirmation that God’s power will be revealed and his redemptive purposes fulfilled. Since these words are, in truth, God’s words (cf. 19:9; 22:6), it is of utmost importance that this vision of the new heaven and the new Jerusalem be proclaimed to the churches.
Expositor’s New Testament Commentary