'Hair' in the Bible

Then she said, "Please may the king remember Yahweh your God, {to prevent the increase of blood avengers who kill}, [so that they] not wipe out my son." He said, "{As Yahweh lives}, surely not one hair shall fall from your son to the ground."

When he shaved his head, it would happen {every year}, which he did because [it was] heavy on him, he would shave it off and weigh the hair of his head: two hundred shekels {by the king's weight}.