2 Kings 16:2-3

2Ahaz was 20 years old when he began to reign, and he reigned 16 years in Jerusalem. But he did not do what was right in the eyes of Adonai his God, as his father David had done.

3Instead he walked in the way of the kings of Israel, and even made his son pass through the fire, like the abominations of the nations whom Adonai had dispossessed before Bnei-Yisrael.