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 2

2:8 And they lay themselves down upon clothes laid to pledge by every altar, and they drink the wine of the condemned in the house of their god.