'Hair' in the Bible

Then she said, I pray thee, let the king remember Jehovah thy God, that thou wouldest not suffer the revengers of blood to destroy any more, lest they cut off my son. And he said, As Jehovah liveth, there shall not one hair of thy son fall to the earth.

And when he shaved his head (for it was at every year's end that he shaved it, because it was heavy on him, therefore he shaved it), he weighed the hair of his head at two hundred shekels after the king's weight.