מדרש על איוב 4:21

"a people ignorant": of the past; "and not wise": to (foresee) the future. Similarly, (Isaiah 1:3) "Israel did not know; My people did not understand": "Israel did not know": of the past; "My people did not understand": to (foresee) the future. Variantly: "a people ignorant and not wise": What caused Israel to be ignorant and foolish? Their not reflecting upon words of Torah. And thus is it written (Iyyov 4:21) "Has not their preeminence fled? They will die for lack of wisdom."