THE FIRSTBORN IS GIVEN TO YHVH

Exodus 13:2 Sanctify unto me all the firstborn, whatsoever openeth the womb among the children of Israel, both of man and of beast: it is mine.

Exodus 13:11 And it shall be when the LORD shall bring thee into the land of the Canaanites, as he sware unto thee and to thy fathers, and shall give it thee,

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 males shall be the LORD'S.

Exodus 13:13 And every firstling of a donkey you shall redeem with a lamb; and if you will not redeem it, then you shall break his neck: and all the firstborn of man among thy children shall you redeem.