John Gill Commentary 2 Kings 17:16

"And they forsook all the commandments of Jehovah their God, and made them molten images, even two calves, and made an Asherah, and worshipped all the host of heaven, and served Baal." — 2 Kings 17:16 (ASV)

And they left all the commandments of the Lord their God
Which their idolatry led them to; and indeed he that offends in one point is guilty of them all, (James 2:10)

and made them molten images, [even] two calves ;
which they set up at Dan and Bethel, in the times of their first king Jeroboam, (1 Kings 13:28 1 Kings 13:29)

and made a grove ;
as Ahab, another of their kings, did, (1 Kings 16:33)

and worshipped all the host of heaven :
not the angels, sometimes so called, but, besides the sun and moon, Saturn, Jupiter, Mars, Mercury, Venus:

and served Baal ;
which was service to the sun, as Abarbinel interprets it; this was the god of the Zidonians Ahab worshipped, having married a princess of that people, (1 Kings 16:31 1 Kings 16:32) .