The most devastating . . . leaving a NEW HEAVEN AND A NEW EARTH stuff
logically, to me,
must come at the end of the thousand year reign of Christ.
and that could include the earth being moved from it’s place or that could come even later.
God didn’t spell much of that out very clearly at all.
that is true it will all be new after the 1000 years. Although the other things that happen in Revelation prior to the 1000 years will be horrendous!