Exodus 29:23-28

23and one loaf of bread and one cake of bread made with oil, and one wafer out of the basket of unleavened bread that is before the LORD. 24You shall put all these on the palms of Aaron and on the palms of his sons, and wave them for a wave offering before the LORD. 25Then you shall take them from their hands and burn them on the altar on top of the burnt offering, as a pleasing aroma before the LORD. It is a food offering to the LORD. 26“You shall take the breast of the ram of Aaron’s ordination and wave it for a wave offering before the LORD, and it shall be your portion. 27And you shall consecrate the breast of the wave offering that is waved and the thigh of the priests’ portion that is contributed from the ram of ordination, from what was Aaron’s and his sons’. 28It shall be for Aaron and his sons as a perpetual due from the people of Israel, for it is a contribution. It shall be a contribution from the people of Israel from their peace offerings, their contribution to the LORD.