Melachim Bais 21:3

3 For he built up again the [idolatrous] high places which Chizkiyah aviv had destroyed; and he reared up mizbechot for Ba’al, and made Asherah, as did Ach’av Melech Yisroel; and bowed down in worship to kol Tzava HaShomayim, and served them.

Melachim Bais 21:3 Meaning and Commentary

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.

Melachim Bais 21:3 In-Context

1 1 Menasheh was twelve years old when he began to reign as melech, and reigned fifty and five years in Yerushalayim. And shem immo was Cheftzi-Vah.

2 And he did that which was rah in the eyes of Hashem, after the to’avot of the Goyim, whom Hashem drove out before the Bnei Yisroel.

3 For he built up again the [idolatrous] high places which Chizkiyah aviv had destroyed; and he reared up mizbechot for Ba’al, and made Asherah, as did Ach’av Melech Yisroel; and bowed down in worship to kol Tzava HaShomayim, and served them.

4 And he built mizbechot in the Beis Hashem, of which Hashem said, In Yerushalayim will I put Shmi (My Name).

5 And he built mizbechot for kol Tzava HaShomayim in the two khatzerot (courtyards) of the Beis Hashem.