He set a graven image of the grove that he had made in the house - Every one may see that Asherah here must signify an idol, and not a grove; and for the proof of this see the observations at the end of the chapter, 2 Kings 21:26; (note).
A graven image of the grove - Rather, “the carved work of the Asherah.” This Asherah which Manasseh placed in the very temple itself, from where it was afterward taken by Josiah to be destroyed 2 Kings 23:6. Such a profanation was beyond anything that had been done either by Athaliah 2 Kings 11:18, or by Ahaz 2 Kings 16:14-18; 2 Chronicles 29:5-7.