Exodus 13:12 That thou shalt set apart unto the Lord all that openeth the
matrix, and every firstling that cometh of a beast which thou hast; the male shall be the Lord's.
Exodus 13:15 And it came to pass, when Pharaoh would hardly let us go, that the Lord slew all the firstborn in the land of Egypt, both the firstborn of man, and the firstborn of beast; therefore I sacrifice to the Lord all that openeth the
matrix, being males; but all the firstborn of my children I redeem.
Numbers 3:12 And I, behold, I have taken the Levites from among the children of Israel instead of all the first-born that openeth the
matrix among the children of Israel; therefore the Levites shall be mine;
Numbers 18:15 Every thing that openeth the
matrix in all flesh, which they bring unto the Lord, whether it be of men or beasts, shall be thine; nevertheless the firstborn of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.
____________________