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.
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.”