2 Kings 18:4

4He removed the high places [of pagan worship], broke down the images (memorial stones) and cut down the Asherim. He also crushed to pieces the bronze serpent that Moses had made, for until those days the Israelites had burned incense to it; and it was called 18:4 The bronze serpent had served God’s purpose for it, and Hezekiah observed correctly that it was nothing more than a piece of art. Unfortunately, the Israelites had forgotten that the serpent had been nothing more than a tool of God, and they had been worshiping the sculpture itself as if it were a god.Nehushtan [a bronze sculpture]. [Num 21:8]