The ox knoweth his owner, and the ass his master's crib; the most stupid brute beasts acknowledge and obey their Lord and Benefactor, as experience showeth. Israel doth not know, to wit, me, their Owner and Master, which is easily and necessarily understood out of the former clause. Knowing is here taken practically, as it is usually in Scripture, and includes reverence and obedience.
Related Commentaries of Isaiah 1:3
Isaiah 1:3
3 The ox knoweth his owner, and the ass his master's crib: but Israel doth not know, my people doth not consider.