Amos is the book of the herdsman from Tekoa, a small town in Judah. He receives a direct call from God to prophesy against the unrighteousness of both Judah and Israel. Amos is the first prophet to proclaim that God is the ruler of the whole world.

Amos 3

3:15 And I will smite the winter house with the summer house; and the houses of ivory shall perish, and the great houses shall have an end, saith the LORD.