Job 18:20 New English Translation

²⁰People of the west^[a] are appalled at his fate;^[b]
people of the east are seized with horror,^[c] saying,^[d]

Job 18:20 tn The word אַחֲרֹנִים (ʾakharonim) means “those [men] coming after.” And the next word, קַדְמֹנִים (qadmonim), means “those [men] coming before.” Some commentators have tried to see here references to people who lived before and people who lived after, but that does not explain their being appalled at the fate of the wicked. So the normal way this is taken is in connection to the geography, notably the seas—“the hinder sea” refers to the Mediterranean, the West, and “the front sea” refers to the Dead Sea (Zech 14:8), namely, the East. The versions understood this as temporal: “the last groaned for him, and wonder seized the first” (LXX).
Job 18:20 tn Heb “his day.”
Job 18:20 tn The expression has “they seize horror.” The RSV renders this “horror seizes them.” The same idiom is found in Job 21:6: “laid hold on shuddering.” The idiom would solve the grammatical problem and not change the meaning greatly, but it would change the parallelism.
Job 18:20 tn The word “saying” is supplied in the translation to mark and introduce the following as a quotation of these people who are seized with horror. The alternative is to take v. 21 as Bildad’s own summary statement (cf. G. R. Driver and G. B. Gray, Job [ICC], 2:162; J. E. Hartley, Job [NICOT], 280).

New English Translation (NET)