10. Whatsoever—namely, in the service of God. This and last verse plainly are the language of Solomon, not of a skeptic, as Holden would explain it.
hand, &c.—(Le 12:8, Margin; 1Sa 10:7, Margin).
thy might—diligence (De 6:5; Jer 48:10, Margin).
no work … in the grave—(Joh 9:4; Re 14:13). "The soul's play-day is Satan's work-day; the idler the man the busier the tempter" [South].