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 7

7:10 Then Amaziah the priest of Bethel sent to Jeroboam king of Israel, saying, Amos hath conspired against thee in the midst of the house of Israel: the land is not able to bear all his words.