“Command the Israelites: ¹  ‘With regard to my offering, ²  be sure to offer ³  my food for my offering made by fire, as a pleasing aroma to me at its appointed time.’ ⁴ 

But you and your sons with you are responsible for your priestly duties, for everything at the altar and within the curtain. And you must serve. I give you the priesthood as a gift for service; but the unauthorized person who approaches must be put to death.”