Amos addresses the cows of Bashan on the mountain of Samaria, the wealthy women who oppress the weak, crush the needy and tell their husbands to bring drinks. The Lord has sworn by his holiness that days are coming when they will be taken away with hooks and fishhooks and go out through the breaches in the walls, each one straight ahead.
Then the prophet ironically invites the people to go to Bethel and Gilgal and sin even more: bring sacrifices every morning, tithes every three days, thank offerings with leaven and proclaim your freewill offerings, because that is what the people of Israel love. The religion they practice is abundant and noisy, but it is empty because the injustice continues.
The Lord then lists what he did to bring them back: he gave them cleanness of teeth in all their cities, withheld the rain three months before harvest, sent rain on one city and not another, and struck their gardens and vineyards with blight and mildew while the locust devoured their fig and olive trees. He sent plagues like those of Egypt, killed their young men with the sword and overthrew them as he overthrew Sodom and Gomorrah, and they were like a brand plucked from the fire. After each blow the Lord repeats: yet you did not return to me.
Therefore God says he will do to Israel what he announced, and Israel must prepare to meet its God. The chapter closes with a short hymn of praise: the one who forms the mountains, creates the wind, declares his thoughts to man, makes the dawn into darkness and treads the heights of the earth, the Lord, the God of hosts, is his name.