2 Kings 21:3

For he built up again the high places which Hezekiah his father had destroyed ,.... The temples and altars upon them, see 2 Kings 18:4 ,

and he reared up altars for Baal ; in the high places he rebuilt:

and made a grove, as did Ahab king of Israel : which was either an idol itself, or a shade of trees where idols were placed; or rather Asherah, rendered "a grove", is the same with Astarte, the goddess of the Zidonians, the figure of which he made and worshipped; for groves were not so soon and easily planted, raised, and made; so the same in 1 Kings 16:33 .

and worshipped all the host of heaven, and served them : the sun, moon, and stars, particularly the planets Saturn, Jupiter, Mars, Mercury, and Venus.