19 ‘You shall keep My statutes. You shall not let your livestock breed with another kind. You shall not sow your field with mixed seed. Nor shall a garment of mixed linen and wool come upon you.
Of this, Henry says:
“Here is, I. A law against mixtures, v. 19. God in the beginning made the cattle after their kind (Gen. i. 25), and we must acquiesce in the order of nature God hath established, believing that is best and sufficient, and not covet monsters. Add thou not unto his works, lest he reprove thee; for it is the excellency of the work of God that nothing can, without making it worse, be either put to it or taken from it, Eccl. iii. 14. As what God has joined we must not separate, so what he has separated we must not join.” [Deut.32:8] ~M. Henry’s Comm. On Lev.19
Notice that he quotes Jesus (Mark 10:9) on the topic of human marriage as the corollary passage. And recall that St. Paul tells us that the laws regarding cattle haven’t chiefly to do with cattle, but with human relations (1 Cor. 9:9-10).
Sir William Blackstone informs us of the definition of the word ‘Monster’ as it is employed by Henry to refer to the offspring of diversely gendered unions:
“A monster … hath no heritable blood, and cannot be heir to any land, albeit it be brought forth in marriage … But our law will not admit a birth of this kind to be such an issue as shall entitle the husband to be tenant by the courtesy; because it is not capable of inheriting. And therefore, if there appears no other heir than such a prodigious birth, the land shall escheat to the lord.” ~Sir William Blackstone’s Comm. on the Law, Vol.II, Chpt.XV
As with the category of a ‘Bastard’, Blackstone tells us that Monsters are, legally speaking, “nullius filius, kin to nobody”.