Leviticus 6:13-16

¹³(6-6) Fire shall be kept burning upon the altar continually; it shall not go out.

¹⁴(6-7) And this is the law of the meal-offering: the sons of Aaron shall offer it before the LORD, in front of the altar.

¹⁵(6-8) And he shall take up therefrom his handful, of the fine flour of the meal-offering, and of the oil thereof, and all the frankincense which is upon the meal-offering, and shall make the memorial-part thereof smoke upon the altar for a sweet savour unto the LORD.

¹⁶(6-9) And that which is left thereof shall Aaron and his sons eat; it shall be eaten without leaven in a holy place; in the court of the tent of meeting they shall eat it.