Perhaps Eliphaz wanted to scare Job into repenting with these words. As before, Eliphaz's authority was his own observations (v. 17; cf. 4:8). To this he added the wisdom of their ancestors (vv. 18-19; cf. 8:8). Probably verse 18 means wise men have not hidden their fathers' traditions. In the ancient world, people considered it foolish to reject the traditions of the past.
Several troubles come on the wicked person because of his sin (vv. 20-35). He writhes in pain--the same Hebrew word describes labor pains--all his life (v. 20a; cf. 14:22). He dies earlier than the godly do (v. 20b; cf. 14:5). He has irrational fears (v. 21a). He suffers destruction while at peace (v. 21b; cf. 1:13-19; 12:6). He experiences torment by a guilty conscience (v. 22a). He feels he is a hunted person (v. 22b). He is anxious about his basic needs (v. 23). Furthermore he feels distressed and in anguish (v. 24; cf. 7:14; 9:34; 13:21; 14:20). Job had confessed every one of these troubles. Eliphaz implied that Job had all the marks of a wicked man. He stressed the inner turmoil of the wicked in this list. He reminded Job that God will destroy the wicked (v. 20).
The writer set forth verses 20-35 in a chiastic structure to emphasize the reasons for these judgments, which form the heart of the section.
AJudgments of the wicked 15:20-24
BReasons for the judgments 15:25-26
B'Reasons for the judgments 15:27-28
A'Judgments of the wicked 15:29-35
The reasons for the judgments were essentially two: rebellion against God (vv. 25-26) and self-indulgence (vv. 27-28). Verse 28 may mean, "He proudly lived in ruined cities and rebuilt houses previously unoccupied, thus defying the curse on ruined sites (15:28; cf. Josh. 6:26; 1 Kings 16:34)."74
Seven more judgments follow in verses 29-35. The wicked person will not prosper (v. 29) but will die (v. 30a). His works will fail (v. 30b-c) and he will suffer prematurely (v. 31-32a; cf. 4:8). His wealth will fail (v. 32b-33), he will experience barrenness (v. 34; cf. 3:7; 4:21; 8:22), and he deceives himself (v. 31). Note that Eliphaz began this section with a reference to childbirth (v. 20) and ended it with another reference to the same thing (v. 35). Not all these judgments are completely distinct from one another. Poetic parallelism often uses a slight restatement to make a more forceful impression rather than to express a different idea.
"It is a subtlety of our author that Eliphaz, who began by calling Job a wind-bag (verse 2), ends his own speech with a pile of verbiage. With tedious repetition, assertion not argument, he presents the doctrine you reap what you sow' in several forms."75