He began to purge Judah - Jeremiah’s first prophecies Jer. 2–3 appear to have been coincident with Josiah’s earlier efforts to uproot idolatry, and must have greatly strengthened his hands.
Related Commentaries of 2 Chronicles 34:3
2 Chronicles 34:3
3 For in the eighth year of his reign, while he was yet young, he began to seek after the God of David his father: and in the twelfth year he began to purge Judah and Jerusalem from the high places, and the groves, and the carved images, and the molten images.