Leviticus 6:14. This is the law of the meat offering.
The meat offering was wholly vegetable in its nature, and was sometimes presented in a raw state and sometimes baked. Specific directions were given concerning the ceremonies to be observed in either case. A portion only was consumed in the fire, and the rest was given to the priest. Neither leaven nor honey was allowed to be mixed with it. It usually accompanied and was subsidiary to the sin and burnt offerings, and the quantity offered was graduated according to the victim presented as a burnt offering (Num. 15:4-9).
It is supposed that oil was used to give the meat offering a grateful relish; and frankincense to make a sweet odor in the court of the Tabernacle. Paul alludes to the fragrant meat offering in Philippians 4:18. The heathen used oil in their sacrifices, not mixed with flour, but poured over the burnt offerings, to make the burning better. They likewise made free use of frankincense in their sacrifices. Full directions concerning the meat offering are given in Leviticus 2:1-16; 6:14-23.