The LORD spoke to Moses. He said,
"Speak to the people of Israel. Tell them, 'Suppose a person brings a friendship offering to the Lord. Then he must bring part of it as his special gift to the Lord.
He must bring it with his own hands. It is an offering that is made to the LORD with fire. He must bring the fat together with the breast. He must lift the breast up and wave it in front of the LORD as a wave offering.
The priest will burn the fat on the altar. " 'But the breast belongs to Aaron and the priests who are in his family line.
Give the right thigh from your friendship offerings to the priest as a gift.
The priest who offers the blood and fat from the friendship offering must be given the right thigh. It is his share.
" 'I, the Lord, have taken the breast that is waved and the thigh that is given. I have taken them from the friendship offerings of the people of Israel. And I have given them to the priest Aaron and the priests who are in his family line. The offerings are their regular share from the people of Israel.' "
That is the part of the offerings that are made to the LORD with fire and given to Aaron and the priests who are in his family line. It was given to Aaron and his sons on the day they were set apart to serve the LORD as priests.
On the day they were anointed, the LORD commanded the people of Israel to give that part to them. For all time to come, it will be the regular share of Aaron and the priests who are in his family line.
Those are the rules for burnt offerings, grain offerings, sin offerings, guilt offerings and friendship offerings. They are also the rules for the offerings that are given when priests are being prepared to serve the Lord.
They are the rules the LORD gave Moses on Mount Sinai. He gave them on the day he commanded the people of Israel to bring their offerings to the Lord. That took place in the Sinai Desert.