ESODO 30:21

E lavinsi le mani ed i piedi, acciocchè non muoiano. Sia loro questo uno statuto perpetuo; ad Aaronne, dico, e a' suoi figliuoli, per le loro età.

So they shall wash their hands and their feet, that they die not: and it shall be a statute for ever to them, even to him and to his seed throughout their generations.