'Head' in the Bible

So Paul, having stayed on for many days, said good-bye to the brothers and sailed away to Syria. Priscilla and Aquila were with him. He shaved his head at Cenchreae because he had taken a vow.

Since the ship was caught and was unable to head into the wind, we gave way to it and were driven along.

Therefore I urge you to take some food. For this has to do with your survival, since none of you will lose a hair from your head.”