Moses
Numbers 15:23ESV·traditional attribution

all that the LORD has commanded you by Moses, from the day that the LORD gave commandment, and onward throughout your generations,

Matthew Henry Presbyterian @wholebiblehenry

We have here the laws concerning sacrifices for sins of ignorance; the Jews understand it of idolatry, or false worship, through the error of their teachers. The case here supposed is that they had not observed all these commandments, Num 15:22, Num 15:23.

Commenting on Numbers 15:22-29

John Gill Reformed Baptist @doctorgill

Then it shall be, if ought be committed by ignorance,.... Of the law of God, not clearly understanding the meaning of it, or not knowing of the several precepts of it, and the circumstances of each, and the manner of performing obedience thereunto: without the knowledge of the congregation; or they being ignorant of the true intent of the law and form of obeying it...

Keil & Delitzsch Lutheran @keilanddelitzsch

Num 15:15-25 “As for the assembly, there shall be one law for the Israelite and the stranger,...an eternal ordinance...before Jehovah.” הקּהל, which is construed absolutely, refers to the assembling of the nation before Jehovah, or to the congregation viewed in its attitude with regard to God.

Commenting on Numbers 15:15-25