Or, for the high places, both for the devils (i.e. the Baals, or false gods, which divers of his people worshipped, whom he permitted and encouraged to do so, giving them liberty to do any thing but to serve God at Jerusalem) and for the calves. So he erected two sorts of high places, some for Baal, and some for the true God, whom he pretended and would be thought to worship in and by the calves.
Related Commentaries of 2 Chronicles 11:15
2 Chronicles 11:15
15 And he ordained him priests for the high places, and for the devils, and for the calves which he had made.