Numbers 18:17-19

Lexham English Bible

¹⁷ Only the firstborn of an ox or the firstborn of a sheep or the firstborn of a goat you will not redeem; they are holy. Their blood you will sprinkle over the altar, and their fat you will turn into smoke as an offering made by fire, a fragrance of appeasement for Yahweh. ¹⁸ But their flesh will be for you like the breast section of the wave offering, and it will be for you like the right upper thigh. ¹⁹ All the contributions of holiness that the Israelites^[a] offer to Yahweh I have given to you and your sons and your daughters with you as an eternal decree; it is an eternal covenant of salt before^[b] Yahweh to you and your offspring with you.”