2 Kings 18:4

4 He removed the high places, smashed the sacred stones and cut down the Asherah poles. He broke into pieces the bronze snake Moses had made, for up to that time the Israelites had been burning incense to it. (It was called Nehushtan.a )

Read 2 Kings 18:4 Using Other Translations

He removed the high places, and brake the images, and cut down the groves, and brake in pieces the brasen serpent that Moses had made: for unto those days the children of Israel did burn incense to it: and he called it Nehushtan.
He removed the high places and broke the pillars and cut down the Asherah. And he broke in pieces the bronze serpent that Moses had made, for until those days the people of Israel had made offerings to it (it was called Nehushtan).
He removed the pagan shrines, smashed the sacred pillars, and cut down the Asherah poles. He broke up the bronze serpent that Moses had made, because the people of Israel had been offering sacrifices to it. The bronze serpent was called Nehushtan.