Amos asks all the children of Israel, the family the Lord brought up from Egypt, to hear the word against them. The Lord knew them alone among all the families of the earth, and therefore he will punish them for all their iniquities. Election is not a license to sin but a responsibility.
Then the prophet poses a series of questions with obvious answers: do two walk together unless they have agreed to meet? Does a lion roar in the forest without prey? Does a bird fall in a trap with no bait? Is a trumpet blown in a city without the people being alarmed? Each shows that events have causes. So too, if disaster falls on a city, the Lord has done it. The Lord does nothing without revealing his secret to his servants the prophets. The lion has roared, who will not fear? The Lord has spoken, who can but prophesy?
Amos summons the strongholds of Ashdod and Egypt to gather on the mountains of Samaria and see the great unrest and oppression within it. Its people do not know how to do right and store up violence and destruction in their palaces. Therefore an enemy will surround the land, bring down its strongholds and plunder its palaces. As a shepherd rescues from the lion's mouth only two legs or a piece of an ear, so the people of Israel who live in Samaria will be rescued, reduced to the corner of a couch and a scrap of a bed.
The Lord will punish Israel's transgressions on the day he visits the altars of Bethel: the horns of the altar will be cut off and fall to the ground. He will strike the winter house and the summer house, and the houses of ivory will perish and the great houses will come to an end.