This whole verse is only a promise of the perpetuity of the gospel church, and the not failing of the additions to it of such as shall be saved till the world shall have an end. The new heavens and the new earth; the new state of the church to be raised up under the Messias. As I intend that shall abide, so there shall be a daily succession of true believers for the upholding of it; for if believers could fail from the earth, the church, made up of them only, as the true members of it, must fail also.
Related Commentaries of Isaiah 66:22
Isaiah 66:22
22 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.