Matthew Poole and continuators on Job 20:26

26. All darkness shall be hid in his secret places , a fire not blown shall consume him, it shall go ill with him that is left in his tabernacle .

i. e. All sorts of miseries both of Soul and Body, and Estate.

Or, is id or laid up; to wit, by God for him. This Phrase may note, that though it be not actually upon him, yet it is reserved and treasured up for him, and is kept as in a sure place, and shall infallibly overtake him.

Either 1. In his hid treasures, as this very word signifies, Psalm. 17. 14. He treasures up wealth, and with God's wrath and curse. Or 2. in those places where he confidently hopes to hide and secure himself from all evils and enemies: yet even there God shall find him out. Or, for, or in stead of (or with, for both ways the prefix Lamed is oft used) his hid treasures

To wit, by man, but kindled by God himself, as that was, Chap. 1. 16. He thinks by his might and violence to secure himself from men, but God by his own immediate hand, or in some unknown and unexpected manner will find him out. Some understand it of Hell-fire; of which see Isa. 30. 33.

i. e. with his Posterity or Family, who shall inherit his Curse as well as his Estate.