Vanity is shown in mankind, the elements, and all that moves on earth; the same course is repeated again and again without any permanent result or real progress; and events and people alike are forgotten.
Abideth - The apparent permanence of the earth increases by contrast the transitory condition of its inhabitants.
Ever - The word does not here absolutely signify "eternity" (compare Ecclesiastes 3:11 note), but a certainly short period (compare Exodus 21:6): here it might be paraphrased "as long as this world, this present order of things, lasts."

One generation passeth away - Men succeed each other in unceasing generations: but the earth is still the same; it undergoes no change that leads to melioration, or greater perfection. And it will continue the same לעולם leolam, during the whole course of time; till the end of all things arrives.

[One] generation passeth away, and [another] generation cometh: but the earth abideth for (d) ever.
(d) One man dies after another, and the earth remains longest, even to the last day, which yet is subject to corruption.

One generation passeth away, and another generation cometh,.... This shows that a man can have no profit of all his labour under the sun, because of his short continuance; as soon almost as he has got anything by his labour, he must leave it: not only particular persons, but families, nations, and kingdoms; even all the inhabitants of the world, that are contemporaries, live together in the same age, in a certain period of time; these gradually go off by death, till the whole generation is consumed, as the generation of the Israelites in the wilderness were. Death is meant by passing away; it is a going out of time into eternity; a departure out of this world to another; a quitting of the earthly house of this tabernacle for the grave, the house appointed for all living; it is man's going to his long home: and this is going the way of all the earth; in a short time a whole race or generation of men go off the stage of the world, and then another succeeds (q); they come in by birth; and men are described from their birth by such as "come into the world"; for which there is a set time, as well as for going out, John 1:9; and these having been a while in the world, go off to make room for another generation; and so things have been from the beginning of the world, and will be to the end of it. Homer (r) illustrates this by the succession of leaves of trees; as is the generation of trees, he says, such is that of men; some leaves, the wind sheds them on the ground; others the budding forest puts forth, and they grow in their room in the springtime; so is the generation of men; one is born, and another ceases. Now death puts an end to all a man's enjoyments got by labour, his riches, honour, and natural knowledge; these all cease with him, and therefore he has no profit of all his labour under the sun;
but the earth abideth for ever; for a long time, until the dissolution of all things; and then, though that and all in it will be burnt up, yet it will rather be changed than destroyed; the form of it will be altered, when the substance of it will continue; it will not be annihilated, but renewed and refined. This is mentioned to show that the earth, which was made for man, of which he is the inhabitant and proprietor, is more stable than he himself; he soon passes off from it, but that continues; he returns to the earth, from whence he came, but that remains as it did; he dies, and leaves the earth behind him, and all his acquisitions in it; and therefore what profit has he of all his labours on it? Besides, that remains to have the same things transacted on it, over and over again, as has been already; God, that made it for men to dwell in, has determined the times before appointed, and the bounds of men's habitations in it; he has appointed who shall dwell on it, and where, in successive generations; and till all these men are born and gone off, age after age, the earth shall continue, and then pass through its last change. The Targum is,
"the earth stands for ever, to bear the vengeance that is to come upon the world for the sins of the children of men.''
The Midrash Tanchuma, as Jarchi observes, interprets it of all the righteous of Israel, called the earth; and he himself, of the meek that shall inherit the earth: says R. Isaac (s),
"one kingdom comes, and another goes, but Israel abideth for ever.''
(q) "Nihil enim semper floret, aetas succedit aetati", Cicero. Orat. Philip. 11. (r) Iliad. 6. v. 146, &c. So Musaeus apud Clement. Stromat. l. 6. p 649. "Ut silvae foliis", &c. Horat. de Arte Poctica, v. 60. (s) Apud R. Joseph. Titatzak in loc.

All things change, and never rest. Man, after all his labour, is no nearer finding rest than the sun, the wind, or the current of the river. His soul will find no rest, if he has it not from God. The senses are soon tired, yet still craving what is untried.

earth . . . for ever-- (Psalm 104:5). While the earth remains the same, the generations of men are ever changing; what lasting profit, then, can there be from the toils of one whose sojourn on earth, as an individual, is so brief? The "for ever" is comparative, not absolute (Psalm 102:26).

"One generation passeth away, and another generation cometh: and the earth remaineth for ev." The meaning is not that the earth remains standing, and thus (Hitz.) approaches no limit (for what limit for it could be had in view?); it is by this very immoveable condition that it fulfils, according to the ancient notion, its destiny, Psalm 119:90. The author rather intends to say that in this sphere nothing remains permanent as the fixed point around which all circles; generations pass away, others appear, and the earth is only the firm territory, the standing scene, of this ceaseless change. In reality, both things may be said of the earth: that it stands for ever without losing its place in the universe, and that it does not stand for ever, for it will be changed and become something else. But the latter thought, which appertains to the history of redemption, Psalm 102:26., is remote from the Preacher; the stability of the earth appears to him only as the foil of the growth and decay everlastingly repeating themselves. Elster, in this fact, that the generations of men pass away, and that, on the contrary, the insensate earth under their feet remains, rightly sees something tragic, as Jerome had already done: Quid hac vanius vanitate, quam terram manere, quae hominum causa facta est, et hominem ipsum, terrae dominum, tam repente in pulverem dissolvi? The sun supplies the author with another figure. This, which he thinks of in contrast with the earth, is to him a second example of ceaseless change with perpetual sameness. As the generations of men come and go, so also does the sun.

Passeth - Men continue but for one, and that a short age, and then they leave all their possessions, and therefore they cannot be happy here, because happiness must needs be unchangeable and eternal; or else the certain knowledge of the approaching loss of all these things will rob a man of solid contentment in them. Abideth - Through all successive generations of men; and therefore man is more mutable than the very earth upon which he stands, and which, together with all the comforts which he enjoyed in it, he leaves behind to be possessed by others.