One of my favorite expressions in the Bible: stiff-necked. The word means stubborn, untractable, not to be led, like an unyielding ox in a yoke. I have softened my neck. I recommend it.

2 Chronicles 30:8

Do not now be stiff-necked as your fathers were, but yield yourselves to the Lord and come to his sanctuary, which he has consecrated forever, and serve the Lord your God, that his fierce anger may turn away from you.
Bible Gateway link: 2 Chronicles 30:8 (ESV)