For as the new heavens and the new earth, which I will make, shall remain before me, said the LORD…
The bulk of the heathen world and also of Israel perish, but Israel's name and seed, i.e. Israel as a nation with the same ancestors and an independent name, remains for ever (cf. Jeremiah 31:35 f.; 33:20-26), as the new heaven and the new earth. And just because Israel's calling in regard to the heathen world is now fulfilled and all things are made new, the old fencing off of Israel from the heathen now comes to an end; and what qualifies for priestly and Levitical service in God's temple is no longer mere natural descent, but inner nobility The prophet thus represents to himself the Church of the future on a new earth and under a new heaven; but he is unable to represent the eternal in the form of eternity; he represents it to himself merely as an unending continuation of temporal history (ver. 23).
(F. Delitzch, D. D.)
Parallel VersesKJV: 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.