Moses
Leviticus 23:27BSB·traditional attribution

“The tenth day of this seventh month is the Day of Atonement. You shall hold a sacred assembly and humble yourselves, and present a food offering to the LORD.

John Calvin Reformed @genevareformer

27. Also on the tenth day of this seventh month. The word כפר, caphar, whence the noun כפרים, cephurim, signifies both to propitiate and to blot out guilt and accusation by means of expiation; כפרים, therefore, are atonements (libationes) for appeasing God; and the word is used in the plural number, because they were not under the imputation of a single kind of guilt, but...

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

Also on the tenth day of this seventh month,.... Tisri, the same as before, answering to part of our September, and part of October: there shall be a day of atonement; for all the sins of the year past; see Lev 16:29, it shall be an holy convocation unto you: when they should be called together for the exercise of holy duties: and ye shall...