Rev. 21 gives a vivid description of the "new heaven and new earth." It has been a fruitful subject of comment, some holding that the earth, having been cursed by sin, will be redeemed, regenerated, purified, and transformed by the "second Adam" and made a fit dwelling-place for the righteous, where the law of love shall prevail and God shall be all in all. The "new heaven" is interpreted to mean the firmament above us. Thus the "new creation" is interpreted to mean the restoration of the physical universe as the final abode of glorified, deathless and sinless humanity. Others hold that the teaching is clear that the present earth is to be literally destroyed, and that the promise of a new heaven and a new earth will be fulfilled, as he hath said: "Behold I make all things new."