A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
job 26:2JOB'S REPLY. (Job 26:1-14)
without power . . . no strength . . . no wisdom--The negatives are used instead of the positives, powerlessness, &c., designedly (so Isa 31:8; Deu 32:21). Granting I am, as you say (Job 18:17; Job 15:2), powerlessness itself, &c. "How hast thou helped such a one?"
job 26:3plentifully . . . the thing as it is--rather, "abundantly--wisdom." Bildad had made great pretensions to abundant wisdom. How has he shown it?
job 26:4For whose instruction were thy words meant? If for me I know the subject (God's omnipotence) better than my instructor; Job 26:5-14 is a sample of Job's knowledge of it.
whose spirit--not that of God (Job 32:8); nay, rather, the borrowed sentiment of Eliphaz (Job 4:17-19; Job 15:14-16).
job 26:5As before in the ninth and twelfth chapters, Job had shown himself not inferior to the friends' inability to describe God's greatness, so now he describes it as manifested in hell (the world of the dead), Job 26:5-6; on earth, Job 26:7; in the sky, Job 26:8-11; the sea, Job 26:12; the heavens, Job 26:13.
Dead things are formed--Rather, "The souls of the dead (Rephaim) tremble." Not only does God's power exist, as Bildad says (Job 25:2), "in high places" (heaven), but reaches to the region of the dead. Rephaim here, and in Pro 21:16 and Isa 14:9, is from a Hebrew root, meaning "to be weak," hence "deceased"; in Gen 14:5 it is applied to the Canaanite giants; perhaps in derision, to express their weakness, in spite of their gigantic size, as compared with Jehovah [UMBREIT]; or, as the imagination of the living magnifies apparitions, the term originally was applied to ghosts, and then to giants in general [MAGEE].
from under--UMBREIT joins this with the previous word "tremble from beneath" (so Isa 14:9). But the Masoretic text joins it to "under the waters." Thus the place of the dead will be represented as "under the waters" (Psa 18:4-5); and the waters as under the earth (Psa 24:2). MAGEE well translates thus: "The souls of the dead tremble; (the places) under the waters, and their inhabitants." Thus the Masoretic connection is retained; and at the same time the parallel clauses are evenly balanced. "The inhabitants of the places under the waters" are those in Gehenna, the lower of the two parts into which Sheol, according to the Jews, is divided; they answer to "destruction," that is, the place of the wicked in Job 26:6, as "Rephaim" (Job 26:5) to "Hell" (Sheol) (Job 26:6). "Sheol" comes from a Hebrew root--"ask," because it is insatiable (Pro 27:20); or "ask as a loan to be returned," implying Sheol is but a temporary abode, previous to the resurrection; so for English Version "formed," the Septuagint and Chaldee translate; shall be born, or born again, implying the dead are to be given back from Sheol and born again into a new state [MAGEE].
job 26:6(Job 38:17; Psa 139:8; Pro 5:11).
destruction--the abode of destruction, that is, of lost souls. Hebrew, Abaddon (Rev 9:11).
no covering--from God's eyes.
job 26:7Hint of the true theory of the earth. Its suspension in empty space is stated in the second clause. The north in particular is specified in the first, being believed to be the highest part of the earth (Isa 14:13). The northern hemisphere or vault of heaven is included; often compared to a stretched-out canopy (Psa 104:2). The chambers of the south are mentioned (Job 9:9), that is, the southern hemisphere, consistently with the earth's globular form.
job 26:8in . . . clouds--as if in airy vessels, which, though light, do not burst with the weight of water in them (Pro 30:4).
job 26:9Rather, He encompasseth or closeth. God makes the clouds a veil to screen the glory not only of His person, but even of the exterior of His throne from profane eyes. His agency is everywhere, yet He Himself is invisible (Psa 18:11; Psa 104:3).
job 26:10Rather, "He hath drawn a circular bound round the waters" (Pro 8:27; Psa 104:9). The horizon seems a circle. Indication is given of the globular form of the earth.
until the day, &c.--to the confines of light and darkness. When the light falls on our horizon, the other hemisphere is dark. UMBREIT and MAURER translate "He has most perfectly (literally, to perfection) drawn the bound (taken from the first clause) between light and darkness" (compare Gen 1:4, Gen 1:6, Gen 1:9): where the bounding of the light from darkness is similarly brought into proximity with the bounding of the waters.
job 26:11pillars--poetically for the mountains which seem to bear up the sky (Psa 104:32).
astonished--namely, from terror. Personification.
his reproof-- (Psa 104:7). The thunder, reverberating from cliff to cliff (Hab 3:10; Nah 1:5).
job 26:12divideth-- (Psa 74:13). Perhaps at creation (Gen 1:9-10). The parallel clause favors UMBREIT, "He stilleth." But the Hebrew means "He moves." Probably such a "moving" is meant as that at the assuaging of the flood by the wind which "God made to pass over" it (Gen 8:1; Psa 104:7).
the proud--rather, "its pride," namely, of the sea (Job 9:13).
job 26:13UMBREIT less simply, "By His breath He maketh the heavens to revive": namely, His wind dissipates the clouds, which obscured the shining stars. And so the next clause in contrast, "His hand doth strangle," that is, obscures the north constellation, the dragon. Pagan astronomy typified the flood trying to destroy the ark by the dragon constellation, about to devour the moon in its eclipsed crescent-shape like a boat (Job 3:8, Margin). But better as English Version (Psa 33:6).
crooked--implying the oblique course, of the stars, or the ecliptic. "Fleeing" or "swift" [UMBREIT] (Isa 27:1). This particular constellation is made to represent the splendor of all the stars.
job 26:14parts--Rather, "only the extreme boundaries of," &c., and how faint is the whisper that we hear of Him!
thunder--the entire fulness. In antithesis to "whisper" (Co1 13:9-10, Co1 13:12).
It was now Zophar's turn to speak. But as he and the other two were silent, virtually admitting defeat, after a pause Job proceeds.