Then the Lord answered Job - This speech is addressed particularly to Job, not only because he is the principal personage referred to in the book, but particularly because he had indulged in language of murmuring and complaint. God designed to bring him to a proper state of mind before he appeared openly for his vindication. It is the purpose of God, in his dealings with his people, "to bring them to a proper state of mind" before he appears as their vindicator and friend, and hence, their trials are often prolonged, and when he appears, he seems at first to come only to rebuke them. Job had indulged in very improper feelings, and it was needful that those feelings should be subdued before God would manifest himself as his friend, and address him in words of consolation.
Out of the whirlwind - The tempest; the storm - probably that which Elihu had seen approaching, Job 37:21-24. God is often represented as speaking to people in this manner. He spake amidst lightnings and tempests on Mount Sinai Exodus 19:16-19, and he is frequently represented as appearing amidst the thunders and lightnings of a tempest, as a symbol of his majesty; compare Psalm 18:9-13; Habakkuk 3:3-6. The word here rendered "whirlwind" means rather "a storm, a tempest." The Septuagint renders this verse, "After Elihu had ceased speaking, the Lord spake to Job from a tempest and clouds."

The Lord answered Job out of the whirlwind - It is not סופה suphah, as in the preceding chapter, Job 37:9; but סורה searah, which signifies something turbulent, tumultuous, or violently agitated; and here may signify what we call a tempest, and was intended to fill Job's mind with solemnity, and an awful sense of the majesty of God. The Chaldee has, a whirlwind of grief, making the whole rather allegorical than real; impressing the scene on Job's imagination.

Then the LORD answered Job out of the (a) whirlwind, and said,
(a) That his words might have greater majesty, and that Job might know with whom he had to do.

Then the Lord answered Job out of the whirlwind,.... As soon as Elihu had done speaking, who saw the tempest rising, and gave hints of it, Job 37:2; and hastened to finish his discourse. This was raised to give notice of the Lord being about to appear, and to display his majesty, and to command reverence and attention. The Targum calls it the whirlwind of distress, as it might be to Job; and a representation of the distressed and disturbed state and condition in which he was. The person that spoke out of it is Jehovah the Son of God, the eternal Word, who very probably appeared in an human form; there was an object seen, Job 42:5; and spoke with an articulate voice to Job;
and said; in answer to his frequent wishes and desires that the Lord would appear and take his cause in hand.

Job had silenced, but had not convinced his friends. Elihu had silenced Job, but had not brought him to admit his guilt before God. It pleased the Lord to interpose. The Lord, in this discourse, humbles Job, and brings him to repent of his passionate expressions concerning God's providential dealings with him; and this he does, by calling upon Job to compare God's being from everlasting to everlasting, with his own time; God's knowledge of all things, with his own ignorance; and God's almighty power, with his own weakness. Our darkening the counsels of God's wisdom with our folly, is a great provocation to God. Humble faith and sincere obedience see farthest and best into the will of the Lord.

(Job 38:1-41)
Jehovah appears unexpectedly in a whirlwind (already gathering Job 37:1-2), the symbol of "judgment" (Psalm 50:3-4, &c.), to which Job had challenged Him. He asks him now to get himself ready for the contest. Can he explain the phenomena of God's natural government? How can he, then, hope to understand the principles of His moral government? God thus confirms Elihu's sentiment, that submission to, not reasonings on, God's ways is man's part. This and the disciplinary design of trial to the godly is the great lesson of this book. He does not solve the difficulty by reference to future retribution: for this was not the immediate question; glimpses of that truth were already given in the fourteenth and nineteenth chapters, the full revelation of it being reserved for Gospel times. Yet even now we need to learn the lesson taught by Elihu and God in Job.

1 Then Jehovah answered Job out of the storm, and said:
2 Who then darkeneth counsel
With words without knowledge?
3 Gird up now thy loins as a man:
I will question thee, and inform thou me!
"May the Almighty answer me!" Job has said, Job 31:35; He now really answers, and indeed out of the storm (Chethib, according to a mode of writing occurring only here and Job 40:6, מנהסערה, arranged in two words by the Keri), which is generally the forerunner of His self-manifestation in the world, of that at least by which He reveals Himself in His absolute awe-inspiring greatness and judicial grandeur. The art. is to be understood generically, but, with respect to Elihu's speeches, refers to the storm which has risen up in the meanwhile. It is not to be translated: Who is he who , which ought to be המחשׁיך, but: Who then is darkening; זה makes the interrogative מי more vivid and demonstrative, Ges. 122, 2; the part. מחשׁיך (instead of which it might also be יחשׁיך) favours the assumption that Job has uttered such words immediately before, and is interrupted by Jehovah, without an intervening speaker having come forward. It is intentionally עצה for עצתי (comp. עם for עמי, Isaiah 26:11), to describe that which is spoken of according to its quality: it is nothing less than a decree or plan full of purpose and connection which Job darkness, i.e., distorts by judging it falsely, or, as we say: places in a false light, and in fact by meaningless words.
(Note: The correct accentuation is מחשׁיך with Mercha, עצה with Athnach, במלין with Rebia mugrasch, bly (without Makkeph) with Munach.)
When now Jehovah condescends to negotiate with Job by question and answer, He does not do exactly what Job wished (Job 13:22), but something different, of which Job never thought. He surprises him with questions which are intended to bring him indirectly to the consciousness of the wrong and absurdity of his challenge - questions among which "there are many which the natural philosophy of the present day can frame more scientifically, but cannot satisfactorily solve."
(Note: Alex. v. Humboldt, Kosmos, ii. 48 (1st edition), comp. Tholuck, Vermischte Schriften, i. 354.)
Instead of כגבר (the received reading of Ben-Ascher), Ben-Naphtali's text offered כּג (as Ezekiel 17:10), in order not to allow two so similar, aspirated mutae to come together.

Lord - The eternal word, Jehovah, the same who spake from mount Sinai. Answered - Out of a dark and thick cloud, from which he sent a tempestuous wind, as the harbinger of his presence. In this manner God appears and speaks to awaken Job and his friends, to the more serious attention to his words; and to testify his displeasure both against Job, and them, that all of them might be more deeply humbled and prepared to receive, and retain the instructions which God was about to give them.