For he knoweth vain men. God is justified in these his judgments, even though he does not implead the man or bring him to account, or hear what he has got to say (Job 9:1-35 :39), since he intuitively and at once "knoweth vain men;" sooth, that is, into the ground of the heart, and recognizes vanity, pretence, false seeming, so that he can judge infallibly without the forensic apparatus wherewith human tribunals are rightly surrounded, on account of the weakness and fallibility of human judges.
He sooth wickedness also. If God can detect in a moment vanity, pretence, false seeming, much more can he detect actual wickedness; which Zophar assumes to have been detected in Job's case. Will he not then consider it?
rather, even though he consider it not (see the Revised Version). God does not need to pause and ponder and "consider" each case. He knows, without any such lengthened consideration, whether a man is true to him or not.