1 Kings 22:43

He walked in all the ways of Asa He took the same care for the government of his kingdom, and especially for the reformation of religion, which Asa did. Nevertheless, the high places were not taken away Not fully, or not in the beginning of his reign. For that he did take them away, at least in part, and probably all those which were erected for the worship of idols, appears from 2 Chronicles 17:9. The people offered incense yet in the high places Old corruptions are not eradicated without difficulty, especially when they have formerly had the patronage of those that were good, as the high places had of Samuel, Solomon, and some others. Indeed this error was so deeply rooted, that the best of their kings, till Hezekiah's time, connived at it.