Where is the story in the bible about young king josiah?

The story of young King Josiah is primarily found in the Old Testament, specifically in 2 Kings 22-23 and 2 Chronicles 34-35. Josiah became king of Judah at the age of eight and initiated significant religious reforms, including the restoration of the Temple and the renewal of the covenant with God after the discovery of the Book of the Law. His reign is noted for a return to worship of Yahweh and a rejection of pagan practices. Josiah's story highlights themes of repentance, reform, and faithfulness to God's commands.