Exodus 29:23-30

23take one loaf of bread, one cake of bread made with oil, and one wafer from the basket of unleavened bread that is before the Lord;

24and put all of them in the hands of Aaron and his sons and present them as a presentation offering before the Lord.

25Take 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“Take the breast from the ram of Aaron’s ordination and present it as a presentation offering before the Lord; it is to be your portion.

27Consecrate for Aaron and his sons the breast of the presentation offering that is presented and the thigh of the contribution that is lifted up from the ram of ordination.

28This will belong to Aaron and his sons as a regular portion from the Israelites, for it is a contribution. It will be the Israelites’ contribution from their fellowship sacrifices, their contribution to the Lord.

29“The holy garments that belong to Aaron are to belong to his sons after him, so that they can be anointed and ordained in them.

30Any priest who is one of his sons and who succeeds him and enters the tent of meeting to minister in the sanctuary must wear them for seven days.