Amos 4:6 - Matthew Poole's English Annotations on the Holy Bible

And I, the Lord, who gave many blessings to win you to repentance, hath also tried what might be done by judgments. Cleanness of teeth: this is a description of famine by one effect of it; where meat fails the teeth are not fouled, as where it is eaten. In all your cities; it was a general famine, and probably it was that long famine, 2 Kings 8:1. Want of bread in all your places; if there were some bread, yet it was very scarce every where: this passage explains the former. Yet have ye not returned unto me; yet this starving people repented not of their idolatries, nor cast off their idols; left not their sins of oppression and cruelty, &c.; see Joel 2:12,13; what you did like returning was partial and hypocritical, and not lasting.