Amos was one of the Twelve Minor Prophets of the Hebrew Bible and Christian Old Testament. According to the Bible, Amos was the older contemporary of Hosea and Isaiah and was active c. 760 through 755 BC during the rule of kings Jeroboam II of Israel and Uzziah of Kingdom of Judah and is portrayed as being from the southern Kingdom of Judah yet preaching in the northern Kingdom of Israel (Samaria). The prophet is characterized as speaking against an increased disparity between the wealthy and the poor with themes of justice, God's omnipotence, and divine judgment. The Book of Amos is attributed to him.