II Chronicles 34:1-3

Josiah was eight years old when he became king, and he reigned thirty-one years in Jerusalem. And he did what was right in the sight of the LORD, and walked in the ways of his father David; he did not turn aside to the right hand or to the left. For in the eighth year of his reign, while he was still young, he began to seek the God of his father David; and in the twelfth year he began to purge Judah and Jerusalem of the high places, the wooden images, the carved images, and the molded images.