קבלה על שמות 30:20

That boy opened and said: "When they come to the Tent of Meeting, they shall wash with water and they will not die, and so on" (Exodus 30:20). We learn from this verse, that one who does not concern oneself with this, and appears before the king with filthy hands, is liable for death. What is the reason? Because the hands of a person sit at the height of the world. There is one finger on the hand of a person, and that is the finger that Moses lifted.