¹⁵ The first issue of the womb of all creatures, human and animal, that is offered to the Lord shall be yours, but the firstborn of human beings you shall redeem, and the firstborn of unclean animals you shall redeem.^{(A) 16} Their redemption price, reckoned from one month of age, you shall fix at five shekels of silver, according to the shekel of the sanctuary (that is, twenty gerahs).^{(B) 17} But the firstborn of a cow or the firstborn of a sheep or the firstborn of a goat you shall not redeem; they are holy. You shall dash their blood on the altar and turn their fat into smoke as an offering by fire^[a] for a pleasing odor to the Lord,^(C)