Moses
Leviticus 23:28BSB·traditional attribution

On this day you are not to do any work, for it is the Day of Atonement, when atonement is made for you before the LORD your God.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The institution of the feast of trumpets, on the first day of the seventh month, Lev 23:24, Lev 23:25. That which was now the seventh month had been reckoned the first month, and the year of jubilee was still to begin with this month (Lev 25:8), so that this was their new year's day.

Commenting on Leviticus 23:23-32

John Gill Reformed Baptist @doctorgill

Ye shall do no work in that same day,.... No more than on the weekly sabbath: for it is a day of atonement, to make atonement for you before the Lord your God: See Gill on Lev 16:30; Aben Ezra's note is,"for you only,''that is, for the Israelites, and not the Gentiles; but the atonement of Christ, the antitype of this, was not for the...

Adam Clarke Methodist @methodicalclarke

A day of atonement - See the note on Lev 16:2, etc., where this subject is largely explained.