The minor prophet of the Old Testament is Hosea (5 letters). Hosea was a prophet in the 8th century BC, during the time of the divided kingdom of Israel. He was one of the twelve minor prophets of the Old Testament, and his book is the first of the twelve minor prophetic books. Hosea's message was focused on the need for repentance and faithfulness to God. He warned the people of the consequences of their sins and encouraged them to turn back to God.