My doctrine is pure - The Septuagint instead of the word "doctrine" here reads "deeds," ἔργοις ergois; the Syriac, "thou sayest I have acted justly." But the word used here (לקח leqach) means properly "fair speech" or "taking arguments," that by which one is "taken" or captivated, from לקח lâqach, "to take." Then it means doctrine, or instruction, Proverbs 1:5; Proverbs 9:9. Here it means the views which Job had expressed. Dr. Good supposes that it means "conduct," a word which would suit the connection, but the Hebrew is not used in this sense.
And I am clean in thine eyes - In the eyes of God, or in his sight. This was a false charge. Job had never maintained that he was perfect (compare the notes at Job 9:20); he had only maintained that he was not such a sinner as his friends maintained that he was, a hypocrite, and a man eminent for guilt. His lack of absolute perfection he was ever ready to admit and mourn over.

My doctrine is pure - לקחי likchi, "my assumptions." What I assume or take as right, and just, and true, are so; the precepts which I have formed, and the practice which I have founded on them, are all correct and perfect. Job had not exactly said, My doctrine and way of life are pure, and I am clean in thine eyes; but he had vindicated himself from their charges of secret sins and hypocrisy, and appealed to God for his general uprightness and sincerity: but Zophar here begs the question, in order that he may have something to say, and room to give vent to his invective.

For thou hast said, (b) My doctrine [is] pure, and I am clean in thine eyes.
(b) He charges Job with this, that he should say, that the thing which he spoke was true, and that he was without sin in the sight of God.

For thou hast said,.... What follows is produced to support the charge, especially of lying, which seems to be founded on what he had said in Job 6:10,
my doctrine is pure; free from error, unadulterated, unmixed, not blended with Heathenish principles and human doctrines; but tending to purity of heart and life, as every word of God, and doctrine that comes from him, is pure, yea, very pure, like silver purified seven times; and such was Job's doctrine which he "received" from God, "took" (y) up and professed, taught and delivered to others, so far as was agreeable to the will of God, and the revelation he had then made: and it appears that Job had very clear and sublime notions of God, of his being and perfections, of his works of nature, providence, and grace; of Christ his living Redeemer, of redemption and justification by him, and of the resurrection of the dead; and had purer and better notions of divine things than his friends had, and spoke better things of God than they did, God himself being witness, Job 42:7; some interpret this of the purity of his life and conversation: he is further charged with saying:
and I am clean in thine eyes: speaking to God, as Jarchi observes; and indeed so he was, and every believer is, in an evangelic sense; as to the new man, which is created in righteousness and true holiness, is without sin, and cannot commit it; and as washed from all sin in the blood of Christ, and as clothed with his righteousness, in which the saints are faultless before the throne, and are unblamable and irreprovable in the sight of God: but Zophar's meaning is, that Job had asserted that he was entirely free from sin in himself, was wholly without it, and did not commit any; and had appealed to God, as knowing it to be true; and which he seems to have grounded on what he had said, Job 10:7; through a mistake of his sense; which was not that he was free from sin entirely, but from any gross notorious sin, or from a wicked course of living, and particularly from the sin of hypocrisy, his friends suggested he was guilty of; otherwise he confesses himself a sinner, and prays for the pardon of his sins, and disclaims perfection in himself; see Job 7:20; and indeed there is no creature in itself clean in the sight of God, either angels or men; every man is naturally unclean; no good man is without sin, without the being, indwelling, and commission of it; nor will any truly gracious man say he is; he knows otherwise, and acknowledges it; he that says he is must be an ignorant man, or a vain and pharisaical man; yea, must not say the truth: some have suspected the first part of the words to be Job's, "and I am clean": and the other Zophar's explaining them; that is, "in thine eyes" (z); in his own apprehension, as if he had a high and conceited opinion of himself.
(y) "doctrina aut oratio mea et sententia mente accepta", Michaelis; so Cocceius; "id quid ab aliis acceptum", Drusius. (z) Vid. Schultens in loc.

doctrine--purposely used of Job's speeches, which sounded like lessons of doctrine (Deuteronomy 32:2; Proverbs 4:2).
thine--addressed to God. Job had maintained his sincerity against his friends suspicions, not faultlessness.

Doctrine - Concerning God and his providence. Clean - I am innocent before God; I have not sinned either by my former actions, or by my present expressions. But Zophar perverts Job's words, for he did not deny that he was a sinner, but only that he was an hypocrite.