Jamieson, Fausset & Brown

They--The earth and the heavens in their present state and form "shall perish" (Heb 12:26-27; Pe2 3:13). "Perish" does not mean annihilation; just as it did not mean so in the case of "the world that being overflowed with water, perished" under Noah (Pe2 3:6). The covenant of the possession of the earth was renewed with Noah and his seed on the renovated earth. So it shall be after the perishing by fire (Pe2 3:12-13). remainest--through (so the Greek) all changes. as . . . a garment-- (Isa 51:6).