Take heed, regard not iniquity - That is, be cautious that in the view which you take of the divine government, and the sentiments which you express, you do not become the advocate of iniquity. Elihu apprehended this from the remarks in which he had indulged, and regarded him as having become the advocate of the same sentiments which the wicked held, and as in fact manifesting the same spirit. It is well to put a man who is afflicted on his guard against this, when he attempts to reason about the divine administration.
For this hast thou chosen rather than affliction - That is, you have chosen rather to give vent to the language of complaint, than to bear your trials with resignation. "You have chosen rather to accuse divine Providence than to submit patiently to his chastisements." "Patrick." There was too much truth in this remark about Job; and it is still not an uncommon thing in times of trial, and indeed in human life in general. People often prefer iniquity to affliction. They will commit crime rather than suffer the evils of poverty; they will be guilty of fraud and forgery to avoid apprehended want. They will be dishonest to their creditors rather than submit to the disgrace of bankruptcy. They will take advantage of the widow and the fatherless rather than suffer themselves. "Sin is often preferred to affliction;" and many are the people who, to avoid calamity, would not shrink from the commission of wrong. Especially in times of trial, when the hand of God is laid upon people, they "prefer" a spirit of complaining and murmuring to patient and calm resignation to the will of God. They seek relief even in complaining; and think it "some" alleviation of their sufferings that they can "find fault with God." "They who choose iniquity rather than affliction, make a very foolish choice; they that ease their cares by sinful pleasures, escape their troubles by sinful projects, and evade sufferings for righteousness' sake by sinful compliances against their consciences; these make a choice they will repent of, for there is more evil in the least sin than in the greatest affliction." Henry.

Regard not iniquity - It is sinful to entertain such wishes; it is an insult to the providence of God. He sends affliction; he knows this to be best for thee: but thou hast preferred death to affliction, thereby setting thy wisdom against the wisdom of God. Many in affliction, long for death; and yet they are not prepared to appear before God! What madness is this! If he takes them at their wish, they are ruined for ever. Affliction may be the means of their salvation; the wished-for death, of their eternal destruction.

Take heed, regard not (p) iniquity: for this hast thou chosen rather than affliction.
(p) And so murmur against God through impatiency.

Take heed, regard not iniquity,.... Not any iniquity, as to show any approbation of it, love for it, and desire after it. All appearance of sin, of every sin, is to be abstained from; but particularly by the iniquity here meant may be the sin of impatience under his affliction; murmuring at the dealings of God with him; arraigning his justice, and saying very indecent things of him, as in Job 34:5. Or it may mean the evil he had been guilty of in so earnestly desiring the night of death:
for this thou hast chosen rather than affliction; chose rather to die than to be afflicted as he was; or chose rather to complain of God, as if he dealt hardly with him, and did not do justly by him, than to submit patiently to the will of God, as he, ought to have done: or this he chose "through affliction" (d); through the force of it, because of it, and by means thereof; and so is a sort of excuse that Elihu makes for him; though at the same time he would have him by no means to regard such iniquity, and indulge to it.
(d) "prae afflictione", Junius & Tremellius, Piscator; "prae miseria ex adflictione", Michaelis.

regard--literally, "turn thyself to."
iniquity--namely, presumptuous speaking against God (Job 34:5, and above, see on Job 36:17-18).
rather than--to bear "affliction" with pious patience. Men think it an alleviation to complain against God, but this is adding sin to sorrow; it is sin, not sorrow, which can really hurt us (contrast Hebrews 11:25).

Chosen - Thou hast chosen rather to quarrel with God, and censure his judgments, than quietly to submit to them.