And when he saw that he could not prevail against him, he smote him under the thigh, and the sinew of Jacob's thigh shrank as he wrestled with him.

Therefore the children of Israel eat not of the sinew which shrank, which is upon the hollow of the thigh, unto this day: because he touched the hollow of Jacob's thigh in the sinew that shrank.

Because I knew that thou art obstinate, and thy neck is an iron sinew, and thy brow brass;