Thematic Bible: Redemption-money of the first-born

Everything that opens the womb, of all flesh which they offer to Yahweh, both of man and animal shall be yours: nevertheless you shall surely redeem the firstborn of man, and you shall redeem the firstborn of unclean animals. You shall redeem those who are to be redeemed of them from a month old, according to your estimation, for five shekels of money, after the shekel of the sanctuary (the same is twenty gerahs).

and you shall give the money, with which the remainder of them is redeemed, to Aaron and to his sons." Verse ConceptsGiving, Of Possessions