And surely the mountain falling - Margin, “Fadeth.” The sense of this is, that the hope of man in regard to living again, must certainly fail - as a mountain falls and does not rise again; as the rock is removed, and is not replaced; or as the waters wear away the stones, and they disappear. The hope of dying man was not like the tree that would spring up again Job 14:7-9; it was like the falling mountain, the wasting waters Job 14:11, the rock that was removed. The reference in the phrase before us is, probably, to a mountain that settles down and disappears - as is sometimes the case in violent convulsions of nature. It does not rise again, but is gone to reappear no more. So Job says it was of man.
And the rock is removed - An earthquake shakes it, and removes it from its foundation, and it is not replaced.