Numbers 18:8-19

⁸ Then the Lord spoke to Aaron , "Now behold , I Myself have given you charge of My offerings , even all the holy gifts of the sons of Israel I have given them to you as a portion and to your sons as a perpetual allotment . ⁹ "This shall be yours from the most holy gifts reserved from the fire ; every offering of theirs, even every grain offering and every sin offering and every guilt offering , which they shall render to Me, shall be most holy for you and for your sons . ¹⁰ "As the most holy gifts you shall eat it; every male shall eat it. It shall be holy to you. ¹¹ "This also is yours, the offering of their gift , even all the wave offerings of the sons of Israel ; I have given them to you and to your sons and daughters with you as a perpetual allotment . Everyone of your household who is clean may eat it. ¹² " All the best of the fresh oil and all the best of the fresh wine and of the grain , the first fruits of those which they give to the Lord , I give them to you. ¹³ " The first ripe fruits of all that is in their land , which they bring to the Lord , shall be yours; everyone of your household who is clean may eat it. ¹⁴ " Every devoted thing in Israel shall be yours. ¹⁵ " Every first issue of the womb of all flesh , whether man or animal , which they offer to the Lord , shall be yours; nevertheless the firstborn of man you shall surely redeem , and the firstborn of unclean animals you shall redeem . ¹⁶ "As to their redemption price , from a month old you shall redeem them, by your valuation , five shekels in silver , according to the shekel of the sanctuary , which is twenty gerahs . ¹⁷ "But the firstborn of an ox or the firstborn of a sheep or the firstborn of a goat , you shall not redeem ; they are holy . You shall sprinkle their blood on the altar and shall offer up their fat in smoke as an offering by fire , for a soothing aroma to the Lord . ¹⁸ "Their meat shall be yours; it shall be yours like the breast of a wave offering and like the right thigh . ¹⁹ " All the offerings of the holy gifts, which the sons of Israel offer to the Lord , I have given to you and your sons and your daughters with you, as a perpetual allotment . It is an everlasting covenant of salt before the Lord to you and your descendants with you."