Isaiah 66:22

Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and there was no longer any sea.

My sheep listen to my voice, and I know them and they follow me,

and to an imperishable, unsullied, and unfading inheritance, which is kept safe for you in heaven,

In fulfilment of his promise we expect new heavens and a new earth, where uprightness will prevail.

and teach them to observe all the commands that I have given you. I will always be with you, to the very close of the age."

Then his voice shook the earth, but now his promise is, "But once more I will make not only the earth but the very heaven to tremble!"

Treasury of Scripture Knowledge

For as the new heavens and the new earth, which I will make, shall remain before me, saith the LORD, so shall your seed and your name remain.

Now the words "But once more" indicate the final removal of all that is shaken, as only created, leaving only what is unshaken to be permanent.

In fulfilment of his promise we expect new heavens and a new earth, where uprightness will prevail.

Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and there was no longer any sea.

and teach them to observe all the commands that I have given you. I will always be with you, to the very close of the age."

My sheep listen to my voice, and I know them and they follow me,

and to an imperishable, unsullied, and unfading inheritance, which is kept safe for you in heaven,