His flesh is so wasted away that it cannot be seen, and his bones that were not seen stick out.
God has spoken once to sinners by their own consciences, to keep them from the paths of the destroyer, but they perceive it not; they are not aware that the checks their own hearts give them in a sinful way are from God, but they are imputed to melancholy or the preciseness of their education; and therefore God speaks twice; he speaks a second time...
Commenting on Job 33:19-28
His flesh is consumed away, that it cannot be seen,.... All being gone, none left to be seen, nothing but skin and bones; and this partly through the vehemence of strong pain, and partly through the nausea of food; not being able to take anything for nourishment and the support of the fluids, and so quite emaciated: and his bones that were not seen stick...
His flesh once prominent "can no more be seen." His bones once not seen now appear prominent. stick out--literally, "are bare." The Margin, Hebrew (Keri) reading. The text (Chetib) reads it a noun "(are become) bareness." The Keri was no doubt an explanatory reading of transcribers.