Jamieson, Fausset and Brown on Job 7:17

17. (Psa 8:4; 144:3). Job means, "What is man that thou shouldst make him [of so much importance], and that thou shouldst expend such attention [or, heart-thought] upon him" as to make him the subject of so severe trials? Job ought rather to have reasoned from God's condescending so far to notice man as to try him, that there must be a wise and loving purpose in trial. David uses the same words, in their right application, to express wonder that God should do so much as He does for insignificant man. Christians who know God manifest in the man Christ Jesus may use them still more.