Exodus 29:22-24

New Century Version

²² “Then take the fat from the male sheep, the fat tail, and the fat that covers the inner organs. In addition, take the best part of the liver, both kidneys, and the fat around them, and the right thigh. (This is the male sheep to be used in appointing priests.)

²³ “Then take the basket of bread that you made without yeast, which you put before the Lord. From it take a loaf of bread, a cake made with olive oil, and a wafer. ²⁴ Put all of these in the hands of Aaron and his sons, and tell them to present them as an offering to the Lord.