Moses
Leviticus 4:12BSB·traditional attribution

all the rest of the bull—he must take outside the camp to a ceremonially clean place where the ashes are poured out, and there he must burn it on a wood fire on the ash heap.

Matthew Henry Presbyterian @wholebiblehenry

The laws contained in the first three chapters seem to have been delivered to Moses at one time. Here begin the statutes of another session, another day. From the throne of glory between the cherubim God delivered these orders. And he enters now upon a subject more strictly new than those before.

Commenting on Leviticus 4:1-12

John Gill Reformed Baptist @doctorgill

And if the whole congregation of Israel sin through ignorance,.... That is, all Israel, or the greatest part of them, as Gersom interprets it, through the ignorant teaching of the judges, who by their instruction cause the people to err, and commit sins of ignorance, as Baal Hatturim on the place observes, and Maimonides elsewhere (g); wherefore Jarchi, and some others, by the congregation of...

Jamieson-Fausset-Brown Reformed @jfbcommentary

SIN OFFERING FOR THE PRIEST. (Lev. 4:3-35) If the priest that is anointed do sin--that is, the high priest, in whom, considering his character as typical mediator, and his exalted office, the people had the deepest interest; and whose transgression of any part of the divine law, therefore, whether done unconsciously or heedlessly, was a very serious offense, both as regarded himself individually, and the influence of his example.

Commenting on Leviticus 4:3-35