Moses
Leviticus 4:35ESV·traditional attribution

And all its fat he shall remove as the fat of the lamb is removed from the sacrifice of peace offerings, and the priest shall burn it on the altar, on top of the LORD’s food offerings. And the priest shall make atonement for him for the sin which he has committed, and he shall be forgiven.

Matthew Henry Presbyterian @wholebiblehenry

I. Here is the law of the sin-offering for a common person, which differs from that for a ruler only in this, that a private person might bring either a kid or a lamb, a ruler only a kid; and that for a ruler must be a male, for the other a female: in all the circumstances of the management of the offering they agreed. Observe, 1.

Commenting on Leviticus 4:27-35

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

Jamieson-Fausset-Brown Reformed @jfbcommentary

it shall be forgiven him--None of these sacrifices possessed any intrinsic value sufficient to free the conscience of the sinner from the pollution of guilt, or to obtain his pardon from God; but they gave a formal deliverance from a secular penalty (Heb 9:13-14); and they were figurative representations of the full and perfect sin offering which was to be made by Christ. Next: Leviticus Chapter 5