The grass withereth. This repetition is again added for the purpose of bringing to nought the glory of the flesh, but at the same time contains within itself a highly valuable consolation, that God, when he has cast down his people, immediately raises up and restores them. The context therefore runs thus: "The grass indeed withereth and perisheth, but the word of the Lord endureth for ever." After having learned how empty and destitute we are of all blessings, how transitory and fading is the glory of the flesh, the only consolation left for us, that we may be raised up by the word of the Lord, as by an outstretched hand, is, that we are frail and fading, but that the word of the Lord is durable and eternal, and, in a word, that the life which we need is offered to us from another quarter. But the word of our God shall stand for ever. This passage comprehends the whole Gospel in few words; for it consists of an acknowledgment of our misery, poverty, and emptiness, that, being sincerely humbled, we may fly to God, by whom alone we shall be perfectly restored. Let not men therefore faint or be discouraged by the knowledge of their nakedness and emptiness; for the eternal word is exhibited to them by which they may be abundantly supported and upheld. We are likewise taught that we ought not to seek consolation from any other source than from eternity, which ought not to be sought anywhere else than in God; since nothing that is firm or durable will be found on the earth. Nothing is more foolish than to rest satisfied with the present state, which we see to be fleeting; and every man is mistaken who hopes to be able to obtain perfect happiness till he has ascended to God, whom the Scripture calls eternal, in order that we may know that life flows to us from him; and indeed he adopts us to be his children on this condition, to make us partakers of his immortality. But this would be of no avail, if the manner of seeking him were not pointed out; and therefore he exhibits the word, from which we must not in any respect turn aside; for if we make the smallest departure from it, we shall be involved in strange labyrinths, and shall find no way of extricating ourselves. Now, the word is called eternal, not merely in itself, but in us; and this ought to be particularly observed, because otherwise we could obtain no consolation. And thus Peter, a faithful expounder of this passage, applies it to us, when he says that "we are regenerated by this incorruptible seed, that is," says he, "by the word which is preached." (1-Peter 1:23, 25.) Hence we infer, what I mentioned a little before, that life is prepared for the dead who shall come thirsting to the fountain that is exhibited to them; for the power which is hid in God is revealed to us by the word.

The grass withereth - This is repeated from the former verse for the sake of emphasis, or strong confirmation.
But the word of our God - The phrase 'word of our God,' refers either to his promise to be the protector and deliverer of his people in their captivity, or, in general, means that all his promises shall be firm and unchanging.
Shall stand for ever - Amidst all revolutions among men, his promise shall be firm. It shall not only live amidst the changes of dynasties, and the revolutions of empires, but it shall continue forever and ever. This is designed for support to an afflicted and oppressed people; and it must have been to them, in their bondage, the source of high consolation. But it is equally so now. Amidst all the changes on earth; the revolutions of empires; the vanishing of kingdoms, God is the same, and his promises are unfailing. We see the grass wither at the return of autumn, or in the drought: we see the flower of the field lose its beauty, and decay; we see man rejoicing in his vigor and his health, cut down in an instant; we see cities fall, and kingdoms lose their power and vanish from among nations, but God changes not. He presides in all these revolutions, and sits calm and unmoved amidst all these changes. Not one of his promises shall fail; and at the end of all the changes which human things shall undergo, Yahweh, the God of his people, will be the same.

The grass withereth, the flower fadeth: but the (m) word of our God shall stand for ever.
(m) Though considering the frailty of man's nature many of the Jews would perish, and so not be partakers of this deliverance, yet God's promise would be fulfilled, and they who remained, would feel the fruit of it.

The grass withereth, the flower fadeth,.... Which is repeated, to raise attention to it, as being a matter of importance, and for the confirmation of it:
but the word of our God shall stand for ever; the Apostle Peter adds, by way of explanation,
and this is the word, which by the Gospel is preached unto you; who seems to distinguish the word from the Gospel, by which it is preached, and to intend Christ the essential Word; who stands or abides for ever as a divine Person; in his office as Mediator, being Prophet, Priest, and King for ever; in the efficacy of his blood, righteousness, and sacrifice; and in the fulness of his grace: it is true of the written word or Gospel, which remains, is everlasting, and will stand and continue, notwithstanding the persecutions of tyrants, the craft of false teachers, the reproach of ungodly men, and the death of the best of men, even of ministers; though all flesh is grass, fading and withering, the word of God is fresh and lively, firm and durable; and so it is as transcribed into the hearts of men, where it becomes the ingrafted word, and issues in everlasting life. It may be applied to God's word of promise, which is for ever settled in heaven, and is always fulfilled.