Job 14:19

“The waters wear the stones, etc.] Either by continual running in them, or constant dropping upon them f608; and the excavations or hollow places they: make are never filled up again, these impressions are never effaced, nor the stones reduced to their ancient form; so man, though he may have the strength of stones, yet the waters of afflictions will gradually wear him away, and bring him to the dust of death, and where he must lie till the heavens be no more: thou washest away the things which grow [out] of the dust of the earth; herbs, plants, and trees, which a violent inundation of water tears up by the roots, and carries away, and they are never restored to their places any more. The…”

“The Hebrew order is more forcible: "Stones themselves are worn away by water." things which grow out of--rather, "floods wash away the dust of the earth." There is a gradation from "mountains" to "rocks" (Job 14:18), then "stones," then last "dust of the earth"; thus the solid mountain at last disappears utterly.”

“The waters wear the stones - By their constant attrition they wear away even the hard rocks, and they disappear, and return no more. The sense is, that constant changes are going on in nature, and man resembles those objects which are removed to appear no more, and not the productions of the vegetable world that spring up again. It is possible that there may also be included the idea here, that the patience, constancy, firmness, and life of any man must be worn out by long continued trials, as even hard rocks would be worn away by the constant attrition of waters. Thou washest away - Margin, “Overflowest.” This is literally the meaning of the Hebrew תשׁטף tı̂shâṭaph. But there is included…”

“The waters: Hence the proverb, "Constant droppings make a hole in a stone." washest: Heb. overflowest, Gen 6:17, Gen 7:21-23 destroyest: Job 19:10, Job 27:8; Psa 30:6, Psa 30:7; Eze 37:11; Luk 12:19, Luk 12:20 Job 14:20”