'Brass' in the Bible

I will break your pride in your power, and I will make your sky like iron [giving no rain and blocking all prayers] and your ground like bronze [hard to plow and yielding no produce].

The heaven which is over your head shall be bronze [giving no rain and blocking all prayers], and the earth which is under you, iron [hard to plow and yielding no produce].

“Because I know that you are obstinate,And your neck is an iron tendonAnd your brow is bronze [both unyielding],

Thus says the Lord God, “Because your lewdness was poured out and your nakedness uncovered through your obscene immoralities with your lovers (pagan allies), and with all your [repulsive] idols, and because of the blood of your sons that you gave to them,