"I will go before you, I will level the mountains, I will break down the gates of BRONZE and the bars of IRON, I will give you the treasures in darkness, riches stored in secret places, so that you may know that I am the Lord, the God of Isreal, who summons you by name. I am the Lord, and there is no other; there is no God but Me. I WILL strengthen you."
Isaiah 45: 2-3, 5