Exodus 29:1-3

1And this is the thing that thou shalt do to them to hallow them, to minister to me in the priest’s office: Take one young bull, and two rams without blemish,

2And unleavened bread, and cakes unleavened tempered with oil, and wafers unleavened anointed with oil: of wheat flour shalt thou make them.

3And thou shalt put them into one basket, and bring them in the basket, with the bull and the two rams.