2 Kings 23:6

And he brought out the grove from the house of the Lord
Not a real grove of trees, but a carved one, as some think; or rather the image of the grove, ( 2 Kings 21:7 ) that is, the idol Ashtoreth, or Astarte, which was set up there; so Theodoret says; some interpreters call it Astoreth, the name of Venus, whom they call Astarte: this Josiah ordered to be brought

without Jerusalem, unto the brook Kidron, and burnt it at the brook
Kidron;
the black brook, where the filth of the sacrifices was carried:

and stamped it small to powder;
as Moses did the golden calf:

and cast the powder thereof upon the graves of the children of the
people;
the common people, see ( Jeremiah 26:23 ) or rather on the graves of the worshippers of idols, as it seems from ( 2 Chronicles 34:4 ) the Targum is,

``on the graves of the children of Galia,''

which, Kimchi says, is the name of an idol; this was done partly in contempt of the idol, groves being, according to law, impure; and partly to the reproach of the deceased, and the memory of them, for their idolatry, and to deter from it those that survived them.