What is man...? — Here is another point of contact with Psalms 8:5; but the spirit of the Psalmist was one of devout adoration, whereas that of Job is one of agony and desperation.
Related Commentaries of Job 7:17
Job 7:17-18
17 What is man, that thou shouldest magnify him? and that thou shouldest set thine heart upon him?
18 And that thou shouldest visit him every morning, and try him every moment?