Walk through Amos, verse by verse, with the great Bible Commentaries of Matthew Henry (1662 - 1714) & Adam Clarke (1760 - 1832)
For they know not to do right - So we may naturally say that they who are doing wrong, and to their own prejudice and ruin, must certainly be ignorant of what is right, and what is their own interest. ...Their eyes, saith the Lord, they have closed.
3:10
For they know not to do right, saith the LORD, who store up violence and robbery in their palaces. KJV
{And they could not do rightful thing/And they knew not (to) do rightful thing, saith the Lord, and they treasured wickedness and raven in their houses.} Wycliffe's Bible
For they know not to do right - So we may naturally say that they who are doing wrong, and to their own prejudice and ruin, must certainly be ignorant of what is right, and what is their own interest. ...Their eyes, saith the Lord, they have closed.