Jamieson, Fausset and Brown on Job 20:11

11. (Psa 25:7), so Vulgate. Gesenius has "full of youth"; namely, in the fulness of his youthful strength he shall be laid in the dust. But "bones" plainly alludes to Job's disease, probably to Job's own words (Job 19:20). Umbreit translates, "full of his secret sins," as in Psa 90:8; his secret guilt in his time of seeming righteousness, like secret poison, at last lays him in the dust. The English Version is best. Zophar alludes to Job's own words (Job 17:16).

with him--His sin had so pervaded his nature that it accompanies him to the grave: for eternity the sinner cannot get rid of it (Re 22:11).