Exodus 29:1-3

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

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

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