Adam Clarke's Bible Commentary Verse 1. Hear this word, ye kine of Bashan] Such an address was quite natural from the herdsman of Tekoa. Bashan was famous for the fertility of its soil, and its flocks and herds; and the prophet here represents the iniquitous, opulent, idle, lazy drones, whether men or women, under the idea of fatted bullocks, which were shortly to be led out to the slaughter.
John Gill's Bible Commentary Ver. 1. Hear this word, ye kine of Bashan , etc.] Or “cows of Bashan” f109 ; a country beyond Jordan, inhabited by the tribes of Gad and Reuben, and the half tribe of Manasseh, very fruitful of pasturage, and where abundance of fat cattle were brought up; to whom persons of distinction, and of the first rank, are here compared. Aben Ezra, Jarchi, and Kimchi, interpret them of the wives
of the king, princes, ministers of state, and great men; and so it may be thought that Amos, a herdsman, in his rustic manner, compliments the court ladies with this epithet, for their plumpness, wantonness, and petulancy. Though it may be the princes and great men themselves may be rather intended, and be so called for their effeminacy, and perhaps with some regard to the calves they worshipped; and chiefly because being fat and flourishing, and abounding with wealth and riches, they became wanton and mischievous; like fat cattle, broke down their fences, and would be under no restraint of the laws of God and man; entered into their neighbours’ fields, seized on their property, and spoiled them of it. So the Targum paraphrases it, “ye rich of substance.”
In like manner the principal men among the Jews, in the times of Christ, are called bulls of Bashan, ( Psalm 22:12); that [are] in the mountains of Samaria ; like cattle grazing on a mountain; the metaphor is still continued: Samaria was the principal city of Ephraim, the metropolis of the ten tribes, ( Isaiah 7:9); situated on a mountain; Mr. Maundrell says, upon a long mount, of an oval figure, having first a fruitful valley, and then a ring of hills running about it. Here the kings of Israel had their palace, and kept their court, and where their princes and nobles resided. Ahab is said to be king of Samaria, ( 1 Kings 21:1); which oppress the poor, which crush the needy ; by laying heavy taxes upon them; exacting more of them than they are able to pay; lessening their wages for work done, or withholding it from them; or by taking from them that little they have, and so reducing them to the utmost extremity, and refusing to do them justice in courts of judicature: which say to their masters, bring, and let us drink ; Kimchi, who interprets these words of the wives
of great men, supposes their 
