Exodus 29:26-28

New Revised Standard Version, Anglicised

²⁶ You shall take the breast of the ram of Aaron’s ordination and raise it as an elevation-offering before the Lord; and it shall be your portion. ²⁷ You shall consecrate the breast that was raised as an elevation-offering and the thigh that was raised as an elevation-offering from the ram of ordination, from that which belonged to Aaron and his sons. ²⁸ These things shall be a perpetual ordinance for Aaron and his sons from the Israelites, for this is an offering; and it shall be an offering by the Israelites from their sacrifice of offerings of well-being, their offering to the Lord.