John Gill's Exposition of the Whole Bible
Job 11:5
But O that God would speak,.... To Job, and stop his mouth, so full of words; convict him of his lies, reprove him for his mocks and scoffs, and make him ashamed of them; refute his false doctrine and oppose it, and show him his folly and vanity in imagining it to be pure, and in conceit thinking himself to be free from sin, and even in the sight of God himself: Zophar seems by this wish to suggest, that what his friends had as yet spoke had had no effect upon Job, and signified nothing; and that he despaired of bringing him to any true sense of himself and his case, but that God only could do it; and therefore he entreats he would take him in hand, and speak unto him; as he had by his providences in afflicting him, so by his spirit in teaching and instructing him; and he adds:
and open his lips against thee; or rather, "with thee", or "to thee" a; converse with thee; speak out his mind freely; disclose the secrets of his wisdom, as in Job 11:6, and that for thy good; fully convince thee of thy sins, mistakes, and follies: for, notwithstanding all the heat and warmth of Zophar's spirit, yet, being a good man, as it cannot be thought he should wilfully and knowingly slander Job, and put a false gloss on his words, so neither could he desire any hurt or injury to be done him, or that God would deal with him as an enemy; only convince and reprove him for his sin, and justify himself and his own conduct, which he imagined Job had arraigned.
a עמך μετα σου, Sept. "tecum", Pagninus, Montanus, Beza, Vatablus, Mercerus, Cocceius, Schmidt, Michaelis; "tibi", V. L. "ad te", Piscator.