Rev. 21:1 – Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and the sea no longer existed. (HCSB)
The sea no longer existed
It’s curious that John notes there is no longer any sea (Rev. 21:1). Why is this?
John may be saying that just as the old heaven and earth have passed away, so has the old sea, which covers most of our planet. Many of God’s creatures reside in the sea or rely on it for life. So why wouldn’t Jesus renovate these huge bodies of water and their inhabitants? Some commentators take John’s words to mean the oceans are done away with, not fresh bodies of water.
Still others take this symbolically as representing the nations and peoples of the Gentiles. Only spiritual Israel – that is, true Israel consisting of Old and New Covenant saints – remains, while unbelievers are cast out, allowing the glory of the Lord to fill the earth: “For the earth will be filled with the knowledge of the Lord’s glory, as the waters cover the sea” (Hab. 2:14).
A.R. Fausset and D. Brown offer this perspective: “The sea is the type of perpetual unrest. Hence our Lord rebukes it as an unruly hostile troubler of His people. It symbolized the political tumults out of which ‘the beast’ arose, Rev 13:1. As the physical corresponds to the spiritual and moral world, so the absence of sea, after the metamorphosis of the earth by fire, answers to the unruffled state of solid peace which shall then prevail…. The sea was once the element of the world’s destruction, and is still the source of death to thousands, whence after the millennium, at the general judgment, it is specially said, ‘The sea gave up the dead … in it.’ Then it shall cease to destroy, or disturb, being removed altogether on account of its past destructions” (Commentary Critical and Explanatory on the Whole Bible, Rev. 21:1, Logos Research Systems).