2 Chronicles 34:1-3

1Josiah was eight years old when he became king, and he reigned for thirty-one years in Jerusalem.

2He did what the Lord approved and followed in his ancestor David’s footsteps; he did not deviate to the right or the left.

3In the eighth year of his reign, while he was still young, he began to seek the God of his ancestor David. In his twelfth year he began ridding Judah and Jerusalem of the high places, Asherah poles, idols, and images.