Numbers 18:16-18

Living Bible

¹⁶ However, you may never accept the firstborn sons, nor the firstborn of any animals that I do not permit for food. Instead, there must be a payment of two and a half dollars made for each firstborn child. It is to be brought when he is one month old.

¹⁷ “However, the firstborn of cows, sheep, or goats may not be bought back; they must be sacrificed to the Lord.^[a] Their blood is to be sprinkled upon the altar, and their fat shall be burned as a fire offering; it is very pleasant to the Lord. ¹⁸ The meat of these animals shall be yours, including the breast and right thigh that are presented to the Lord by the gesture of waving before the altar.