Levítico 10

E ciò per poter discernere tra la cosa santa e la profana; e tra la cosa immonda e la monda;

Y para poder discernir entre lo santo y lo profano, y entre lo inmundo y lo limpio;

And that ye may put difference between holy and unholy, and between unclean and clean;

You are to make a distinction between the holy and the common, and between the unclean and the clean.