Numbers 18:12-18

¹²I am also giving to you the first food that people harvest each year and bring to me—the best olive oil and new wine and grain.

¹³All of the first crops that people harvest and bring to me belong to you. Anyone in your family who has performed the ritual to become acceptable to me is permitted to eat that food.

¹⁴Everything in Israel that is set apart to belong to me also belongs to you.

¹⁵The firstborn males, both humans and domestic animals, that are offered to me, will be yours. But people must buy back their firstborn sons and the firstborn animals that may not be used for sacrifices.

¹⁶They must buy them back when they are one month old. The price that they must pay for each one is five pieces of silver. They must weigh the silver on the scales that are in the Sacred Tent.

¹⁷But they are not permitted to buy back the firstborn cattle or sheep or goats. They are holy and have been set apart for me. Slaughter them and sprinkle their blood on the altar. Then completely burn the fat of those animals on the altar to be an offering to me. The smell as they burn will be very pleasing to me.

¹⁸The meat from those offerings will be yours, just like the breast and right thigh of animals that are presented to me to maintain fellowship with me as the priest lifts them up high in front of the altar are yours.