Moses
Deuteronomy 12:16ESV·traditional attribution

Only you shall not eat the blood; you shall pour it out on the earth like water.

Matthew Henry Presbyterian @wholebiblehenry

There is not any one particular precept (as I remember) in all the law of Moses so largely pressed and inculcated as this, by which they are all tied to bring their sacrifices to that one altar which was set up in the court of the tabernacle, and there to perform all the rituals of their religion; for, as to moral services, then, no doubt...

Commenting on Deuteronomy 12:5-32

John Gill Reformed Baptist @doctorgill

Only ye shall not eat the blood,.... All manner of blood being forbidden, of fowl or of beasts, whether slain for sacrifice or for common food: ye shall pour it out upon the earth as water; which cannot be gathered up again for use, but is swallowed up in the earth.

Jamieson-Fausset-Brown Reformed @jfbcommentary

BLOOD PROHIBITED. (Deu 12:16-25) ye shall not eat the blood; ye shall pour it upon the earth as water--The prohibition against eating or drinking blood as an unnatural custom accompanied the announcement of the divine grant of animal flesh for food (Gen 9:4), and the prohibition was repeatedly renewed by Moses with reference to the great objects of the law (Lev 17:12), the prevention of...

Commenting on Deuteronomy 12:16-25