What is the Bible talking about when it tells us there will be a new earth? Why doesn't anyone elaborate on th?

Matthew 6:10 Let your Kingdom come your will be done on earth as it is in heaven.(Revelation 21:1-27) And I saw a new heaven and a new earth(Isaiah 65:17) “For here I am creating new heavens and a new earth; and the former things will not be called to mind, neither will they come up into the heart.(2 Peter 3:13) But there are new heavens and a new earth that we are awaiting according to his promise, and in these righteousness is to dwell.