Moses
Leviticus 23:18BSB·traditional attribution

Along with the bread you are to present seven unblemished male lambs a year old, one young bull, and two rams. They will be a burnt offering to the LORD, together with their grain offerings and drink offerings—a food offering, a pleasing aroma to the LORD.

Matthew Henry Presbyterian @wholebiblehenry

Here is the institution of the feast of pentecost, or weeks, as it is called (Deu 16:9), because it was observed fifty days, or seven weeks, after the passover. It is also called the feast of harvest, Exo 23:16. For as the presenting of the sheaf of first-fruits was an introduction to the harvest, and gave them liberty to put in the sickle, so they...

Commenting on Leviticus 23:15-22

John Gill Reformed Baptist @doctorgill

And ye shall offer with the bread seven lambs without blemish, of the first year,.... That is, with the two wave loaves, the meat or bread offering: and besides these: and one young bullock, and two rams; in Num 28:27 it is two young bullocks, and one ram; and Aben Ezra suggests, that this was at the will and option of the priest, whether one...

Jamieson-Fausset-Brown Reformed @jfbcommentary

FEAST OF PENTECOST. (Lev 23:15-22) ye shall count unto you from the morrow after the sabbath--that is, after the first day of the passover week, which was observed as a Sabbath.

Commenting on Leviticus 23:15-22