Leviticus 9:12-14 - The Burnt Offering For The Priests
12 And so the burnt offering was slaughtered, and Aaron's sons secured for him the blood, which he poured on the altar and around it. 13 As for the burnt offering, they delivered it to Aaron piece by piece, and he burned the head on the altar, 14 washed the internal organs and thighs, and incinerated them on the altar, along with the whole burnt offering.