יָדַ֥ע שׁוֹר֙ קֹנֵ֔הוּ וַחֲמ֖וֹר אֵב֣וּס בְּעָלָ֑יו יִשְׂרָאֵל֙ לֹ֣א יָדַ֔ע עַמִּ֖י לֹ֥א הִתְבּוֹנָֽן׃
The ox knoweth his owner, And the ass his master’s crib; But Israel doth not know, My people doth not consider.
Read Jewish philosophy on Isaiah 1:3: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.