If one wished to contend with him, one could not answer him once in a thousand times.
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
He is wise in heart,.... Originally, essentially, truly, really, and perfectly so; he is the only, and the all wise God; his understanding is infinite; he is able to traverse all the schemes of men, in things civil or religious, and disappoint all their devices; for though there be ever so many of them, or be ever so deeply laid, the counsel of the Lord...
If he--God will contend with him--literally, "deign to enter into judgment." he cannot answer, &c.--He (man) would not dare, even if he had a thousand answers in readiness to one question of God's, to utter one of them, from awe of His Majesty.