John Wesley on 2 Chronicles 11:15

High places - Or, for the high places, both for the devils (the Baals, or false gods, which divers of his people worshipped, whom he encouraged to do so, giving them liberty to do anything 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 be pretended to worship, in and by the calves.