2 Kings 23:6
And he brought out the grove from the house of the Lord, without Jerusalem, unto the brook Kidron, and burned it at the brook Kidron, and stamped it small to powder, and cast the powder thereof upon the graves of the children of the people.
Cross-reference
In 2 Kings 23:12, Josiah also throws dust of broken altars into the Kidron — a related action in the same reform movement.
In 2 Kings 23:15, Josiah burns the Asherah at Bethel — another instance of the same destruction method in the same campaign.
2 Kings 21:7 records Manasseh placing this same Asherah pole in the temple; Josiah now reverses that act by destroying it.
In 2 Kings 21:5, Manasseh builds altars in the temple courts — the opposite of Josiah's purge, showing the cycle of reform and apostasy.
In 2 Kings 10:27, Jehu destroys Baal's house and makes it a latrine — a different method of desecrating idolatry, but same reform spirit.
Exodus 32:20 shows Moses burning and grinding the golden calf to powder, prefiguring Josiah's identical treatment of the Asherah pole.
Deuteronomy 7:5 commands cutting down and burning Asherah poles — Josiah's action here obeys that command.
In Deuteronomy 9:21, Moses burns the golden calf, grinds it to dust, and throws it into the stream — the same pattern Josiah follows here.
Judges 3:7 shows Israelites serving Baals and Asherahs — the same pattern of idolatry Josiah is eradicating.
1 Kings 14:23 describes the widespread erection of Asherah poles, the very practice Josiah destroys in this verse.
Jeremiah 17:2 references Asherah poles beside trees and hills — the same idolatry Josiah is purging from Judah.
1 Kings 16:33 notes Ahab making an Asherah pole — a specific instance of the type Josiah now removes.
In 2 Chronicles 34:4, the parallel account has Josiah grinding incense altars to dust — the same reform from a different chronicler's perspective.
In Deuteronomy 7:5, God commands Israel to burn Asherah poles — Josiah here obeys that command literally.
In 2 Chronicles 33:7, Manasseh placed a carved idol in the temple, while Josiah removed the Asherah from the house of the LORD.
In 2 Chronicles 33:3, Manasseh rebuilt high places and made Asherahs, directly opposite to Josiah's cleansing of the same idol.
In 2 Chronicles 15:16, King Asa likewise removes an Asherah and burns it at the brook Kidron, mirroring Josiah's reform.
In 2 Chronicles 14:3, Asa cuts down Asherim, a precedent for Josiah's removal of the Asherah here.
In 1 Kings 15:13, Asa burns his mother's Asherah image at the Kidron brook — the same action Josiah repeats centuries later.
In Jeremiah 32:34, people set up abominations in the temple, the very thing Josiah purged, showing the sin he temporarily corrected.