Isaiah 48:4 in the King James Version
Because I knew that thou art obstinate, and thy neck is an iron sinew, and thy brow brass;
Context
3 I have declared the former things from of old. Yes, they went out of my mouth, and I revealed them. I did them suddenly, and they happened.
4 Because I knew that you are obstinate, and your neck is an iron sinew, and your brow bronze;
5 therefore I have declared it to you from of old; before it came to pass I showed it to you; lest you should say, ‘My idol has done them. My engraved image and my molten image has commanded them.’