They shall perish
Both the heavens and the earth, though so well founded, and so firmly made; they shall be dissolved, melt, and pass away; not as to the substance, but as to the quality of them: or, as R. Judah Ben David says, whom Aben Ezra on the place cites, and calls the first grammarian in the west, not as to generals, but as to particulars:
but thou shalt endure;
as the eternal God, from everlasting to everlasting; and, even as man, he will die no more; and, as Mediator, will ever remain; he will be King for ever; his throne is for ever and ever; his kingdom is an everlasting one; he is a priest for ever, after the order of Melchizedek; his sacrifice is of an eternal efficacy, and he ever lives to make intercession for his people; he will always continue, as the Prophet, in his church, to teach by his Spirit, word, and ordinances, in the present state; and hereafter will be the light of the New Jerusalem, and of his saints, for ever:
yea, all of them shall wax old like a garment:
not only the heavens, which are as a curtain and garment about the earth, but the earth itself, ( Isaiah 51:6 ) , will lose their beauty and glory, and become useless, as to the present form of them:
as a vesture shall thou change them, and they shall be changed;
as to their form, as a garment that is turned or folded up, and laid aside, as to present use: this seems to favour the above sense given, that the earth and heavens will not perish, as to the substance of them; but as to their form, figure, fashion, and scheme; and as to the qualities of them, all noxious ones being purged away by fire, the curse removed, and new heavens and new earth arise out of them.