Job 15:21-24
21. An evil conscience conceives alarm at every sudden sound, though it be in a time of peace ("prosperity"), when there is no real danger (Le 26:36; Pr 28:1; 2Ki 7:6).
22. darkness—namely, danger or calamity. Glancing at Job, who despaired of restoration: in contrast to good men when in darkness (Mic 7:8, 9).
waited for of—that is, He is destined for the sword [GESENIUS]. Rather (in the night of danger), "he looks anxiously towards the sword," as if every sword was drawn against him [UMBREIT].23. Wandereth in anxious search for bread. Famine in Old Testament depicts sore need (Isa 5:13). Contrast the pious man's lot (Job 5:20-22).
knoweth—has the firm conviction. Contrast the same word applied to the pious (Job 5:24, 25). ready at his hand—an Arabic phrase to denote a thing's complete readiness and full presence, as if in the hand.24. prevail—break upon him suddenly and terribly, as a king, &c. (Pr 6:11).
Job 20:26-28
26. 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 (Jude 13; De 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," Mt 3:12). Tact is shown by the friends in not expressly mentioning, but alluding under color of general cases, to Job's calamities; here (Job 1:16) UMBREIT explains it, wickedness, is a "self-igniting fire"; in it lie the principles of destruction. ill . . . tabernacle—Every trace of the sinner must be obliterated (Job 18:15).27. All creation is at enmity with him, and proclaims his guilt, which he would fain conceal.
28. increase—prosperity. Ill got—ill gone.
flow away—like waters that run dry in summer; using Job's own metaphor against himself (Job 6:15-17; 2Sa 14:14; Mic 1:4). his wrath—God's.