Leviticus 6:14-23

‘Now this is the law of the grain offering: the sons of Aaron shall present it before the LORD in front of the altar. One of them shall take up from it a handful of the fine flour of the grain offering with its oil and all the incense that is on the grain offering, and he shall offer it up in smoke on the altar, a sweet and soothing aroma, as the memorial offering to the LORD. What is left of it Aaron and his sons are to eat. It shall be eaten as unleavened bread in a holy place; they are to eat it in the courtyard of the Tent of Meeting. [1 Cor 9:13, 14] It shall not be baked with leaven [which represents corruption or sin]. I have given it as their share of My offerings by fire; it is most holy, like the sin offering and the guilt offering. Every male among the sons of Aaron may eat it [as his share]; it is a permanent ordinance throughout your generations, from offerings by fire to the LORD. Whatever touches them will become consecrated (ceremonially clean).’ ” Then the LORD spoke to Moses, saying, “This is the offering which Aaron and his sons are to present to the LORD on the day when he is anointed: the tenth of an ephah of fine flour as a regular grain offering, half of it in the morning and half of it in the evening. It shall be prepared with oil on a griddle. When it is well stirred, you shall bring it. You shall present the grain offering in baked pieces as a sweet and soothing aroma to the LORD. The priest from among the sons of Aaron who is anointed in his place shall offer it. By a permanent statute it shall be entirely offered up in smoke to the LORD. So every grain offering of the priest shall be burned entirely. It shall not be eaten.”