15 Every thing that openeth the matrix in all flesh, which they bring to the LORD, whether of men or beast, shall be thine: nevertheless, the first born of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.
16 And those that are to be redeemed from a month old shalt thou redeem, according to thy estimation, for the money of five shekels, after the shekel of the sanctuary, which is twenty gerahs.
17 But the firstling of a cow, or the firstling of a sheep, or the firstling of a goat, thou shalt not redeem; they are holy: thou shalt sprinkle their blood upon the altar, and shalt burn their fat for an offering made by fire, for a sweet savor to the LORD.
18 And the flesh of them shall be thine, as the wave-breast and as the right shoulder are thine
19 All the heave-offerings of the holy things, which the children of Israel offer to the LORD, have I given to thee, and to thy sons and thy daughters with thee, by a statute for ever: it is a covenant of salt for ever before the LORD to thee and to thy seed with thee.
20 And the LORD spoke to Aaron, Thou shalt have no inheritance in their land, neither shalt thou have any part among them: I am thy part and thy inheritance among the children of Israel.
21 And behold, I have given the children of Levi all the tenth in Israel for an inheritance, for their service which they serve, even the service of the tabernacle of the congregation.