"The Book of Amos is one of the books of the Nevi'im (Hebrew: "prophets") and of the Christian Old Testament. Amos is one of the minor prophets. Amos was the first biblical prophet whose words were recorded in a book, an older contemporary of Hoseah and Isaiah. He was active c 750 BC during the reign of Jeroboam II. He lived and prophesied in the southern kingdom of Judah. His major themes of social justice, God's omnipotence, and divine judgment became staples of prophecy." (Summary by Wikipedia)