Josiah was the king of Judah from approximately 640 to 609 B.C. His reign in Jerusalem is discussed in 2 Kings 22–23 and 2 Chronicles 34–35. Josiah was the son of King Amon and the grandson of King Manasseh—both of them wicked kings of Judah. Yet Josiah was a godly king and known as one of the world’s youngest kings; he began his reign at age 8 after his father was assassinated. A highlight of Josiah’s reign was his rediscovery of the Law of the Lord.