Total darkness is reserved for his treasures. A fire unfanned will consume him and devour what is left in his tent.
Zophar, having described the many embarrassments and vexations which commonly attend the wicked practices of oppressors and cruel men, here comes to show their utter ruin at last. I. Their ruin will take its rise from God's wrath and vengeance, Job 20:23. The hand of the wicked was upon him (Job 20:22), every hand of the wicked.
Commenting on Job 20:23-29
All darkness shall be hid in his secret places,.... In such places of secrecy, where he may promise himself safety, he shall find more calamities of all sorts; or every kind of judgments shall find him out, and come upon him, sometimes signified by darkness, see Isa 8:22; or utter darkness, the blackness of darkness; everlasting wrath, ruin, and destruction, are laid up and reserved...
All darkness--that is, every calamity that befalls the wicked shall be hid (in store for him) in His (God's) secret places, or treasures (Jde 1:13; Deu 32:34). not blown--not kindled by man's hands, but by God's (Isa 30:33; the Septuagint in the Alexandrian Manuscript reads "unquenchable fire," Mat 3:12).