Exodus 29:22-24

Amplified Bible, Classic Edition

²² Also you shall take the fat of the ram, the fat tail, the fat that covers the entrails, the appendage on the liver, the two kidneys with the fat that is on them, and the right thigh; for it is a ram of consecration and ordination.

²³ Take also one loaf of bread, and one cake of oiled bread, and one wafer out of the basket of the unleavened bread that is before the Lord.

²⁴ And put all these in the hands of Aaron and his sons and they shall wave them for a wave offering before the Lord.