He is wise in heart and mighty in strength— who has hardened himself against him, and succeeded?—
Bildad began with a rebuke to Job for talking so much, Job 8:2. Job makes no answer to that, though it would have been easy enough to retort it upon himself; but in what he next lays down as his principle, that God never perverts judgment, Job agrees with him: I know it is so of a truth, Job 9:2.
Commenting on Job 9:1-13
Which removeth the mountains,.... This and what follow are instances of the power of God, and are full proofs of his being mighty in strength; and may be understood, either literally, not only of what God is able to do if he will, but of what he has done; and history (y) furnishes us with instances of mountains being removed from one place to another...
wise in heart--in understanding!--and mighty in power! God confounds the ablest arguer by His wisdom, and the mightiest by His power. hardened himself--or his neck (Pro 29:1); that is, defied God. To prosper, one must fall in with God's arrangements of providence and grace.