Moses
Leviticus 23:44ESV·traditional attribution

Thus Moses declared to the people of Israel the appointed feasts of the LORD.

Matthew Henry Presbyterian @wholebiblehenry

We have here, I. The institution of the feast of tabernacles, which was one of the three great feasts at which all the males were bound to attend, and celebrated with more expressions of joy than any of them. 1.

Commenting on Leviticus 23:33-44

John Gill Reformed Baptist @doctorgill

And Moses declared unto the children of Israel the feasts of the Lord. The several feasts before recited, the order of them, the manner of observing them, and the time. Next: Leviticus Chapter 24

Keil & Delitzsch Lutheran @keilanddelitzsch

Lev 23:44 Communication of these laws to the people.