If God be pleased to contend (to wit, in judgment; debate or plead; for so this word is oft used, as Hosea 2:2, Hosea 4:1 Micah 6:1; compare Isaiah 45:9) with man. One of a thousand; either to one accusation or argument among a thousand which God shall produce against him, or one time of a thousand. So far will he be from being able to maintain his own innocency against God, if God set himself against him as his adversary.
Related Commentaries of Job 9:3
Job 9:3
3 If he will contend with him, he cannot answer him one of a thousand.