The Bronze Serpent in 2 Kings 18

The bronze serpent is mentioned in 2 Kings 18. Hezekiah, again, as part of his campaign against idolatry, destroys the bronze serpent of Moses. Now that account raises a number of questions. Did they worship it from the time of the construction of the temple? In other words, when they actually got a temple in Jerusalem, did they bring this thing in and start to worship it? Well, who knows?