The people were so fondly and strangely addicted to the high places, that the foregoing kings, though men of riper years, and great power and courage, and finally settled in their thrones, could not take them away; and therefore it is not strange if Jehoiada could not now remove them, when the king was very young and tender, and not well settled in his kingdom, and when the people were more corrupt and disorderly through Athaliah's maladministration. Sacrificed and burnt incense in the high places to God.
Related Commentaries of 2 Kings 12:3
2 Kings 12:3
3 But the high places were not taken away: the people still sacrificed and burnt incense in the high places.