Because
2 Peter 3:13
and for new heavens and a new earth according to His promise we do wait, in which righteousness doth dwell;
into the glorious
Romans 8:19
for the earnest looking out of the creation doth expect the revelation of the sons of God;
Revelation 22:3-5
3
and any curse there shall not be any more, and 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 [is] upon their foreheads,
5
and night shall not be there, and they have no need of a lamp and light of a sun, because the Lord God doth give them light, and they shall reign -- to the ages of the ages.