Moses
Leviticus 19:19ESV·traditional attribution

“You shall keep my statutes. You shall not let your cattle breed with a different kind. You shall not sow your field with two kinds of seed, nor shall you wear a garment of cloth made of two kinds of material.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A law against mixtures, Lev 19:19. God in the beginning made the cattle after their kind (Gen 1:25), and we must acquiesce in the order of nature God hath established, believing that is best and sufficient, and not covet monsters.

Commenting on Leviticus 19:19-29

John Gill Reformed Baptist @doctorgill

Ye shall keep my statutes,.... Those which follow, and which are of a different sort from what are last mentioned, of a moral nature, and are planted in the heart, as Aben Ezra says; are agreeably to the law and light of nature, and part of the work of the law written on the heart, as the apostle calls it, Rom 2:15; but the following...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Thou shalt not let thy cattle gender with a diverse kind--This prohibition was probably intended to discourage a practice which seemed to infringe upon the economy which God has established in the animal kingdom. thou shalt not sow thy field with mingled seed--This also was directed against an idolatrous practice, namely, that of the ancient Zabians, or fire-worshippers, who sowed different seeds, accompanying the act...