For he built up again the high places which Hezekiah his father had destroyed; and he reared up altars for Baal, and made a grove, as did Ahab king of Israel; and worshipped all the host of heaven, and served them. (2 Kings 21:3)
The sun, moon, and stars. The worship of the sun accounted for the sun chariots and horses that were placed at the entrance to the Temple (ch. 23:11).
Altars for Baal.
The worship of Baal, which had flourished under Athaliah (ch. 11:18) and Ahaz (2 Chron. 28:2), and which was so common in Israel, was now brought back to Judah.
Built up again.
Manasseh did much to counteract the good done by his father. The idolatrous, licentious, cruel, and superstitious rites in use among the surrounding nations, which had been prohibited by Hezekiah, were brought back. Paganism revived, idols were worshiped, and Judah went far along the path that was to fill up the measure of the nation’s iniquity.