'Heads' in the Bible

On a Sabbath, He passed through the grainfields. His disciples were picking heads of grain, rubbing them in their hands, and eating them.

But the very hairs on your heads are all counted. Away with fear: you are more precious than a multitude of sparrows.'

and yet not a hair of your heads shall perish.

And when these things begin to come to pass, then look up, and lift up your heads; for your redemption draweth nigh.