Job 9:4 - Joseph Benson’s Commentary on the Old and New Testaments

He is wise in heart He is infinitely wise, and searcheth all men's hearts and ways, and discovers a multitude of sins, which men's short-sighted eyes cannot see; and therefore can charge them with innumerable evils, of which they thought themselves innocent, and sees far more malignity than men can discern in their sins. Mighty in strength So that, whether men contend with God by wisdom or by strength, God will be conqueror. Who hath hardened himself, &c. Obstinately contended with him. The devil promised himself that Job, in the day of his affliction, would curse and speak ill of God. But, instead of that, he sets himself to honour God and speak highly of him. As ill pained as he is, and as much as he is taken up with his own miseries, when he has occasion to mention the wisdom and power of God, he forgets his complaints, and expatiates, with a flood of eloquence, on that glorious subject.