The Book of Amos is one of the books of the Hebrew Bible. Amos was the first biblical prophet whose words were recorded in a book, an older contemporary of Hosea and Isaiah. He was active c. 750 BC during the reign of Jeroboam II. He lived in the kingdom of Judah but preached in the northern kingdom of Israel. His major themes of social justice, God's omnipotence, and divine judgment became staples of prophecy. Without dispute, the Book of Amos has been accepted as canonical by Jews, the Eastern Orthodox, Roman Catholics, and Protestants.