Exod.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.

Exod.13.12

you are to set aside the first birth out of every womb to GOD. Every first birth from your livestock belongs to GOD.

Exod.13.12

you are to give over to the LORD the first offspring of every womb. All the firstborn males of your livestock belong to the LORD.

Exod.13.12

that you shall set apart to the LORD all that open the womb, that is, every firstborn that comes from an animal which you have; the males shall be the LORD's.