Moses
Deuteronomy 26:4ESV·traditional attribution

Then the priest shall take the basket from your hand and set it down before the altar of the LORD your God.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. A good work ordered to be done, and that is the presenting of a basket of their first-fruits to God every year, Deu 26:1, Deu 26:2. Besides the sheaf of first-fruits, which was offered for the whole land, on the morrow after the passover (Lev 23:10), every man was to bring for himself a basket of first-fruits at the feast of pentecost...

Commenting on Deuteronomy 26:1-11

John Gill Reformed Baptist @doctorgill

And the priest shall take the basket out of thine hand,.... To wave it, as Jarchi says, putting his hand under the hand of the owner, and so waving it; and this being waved to and fro towards the several corners of the earth, was an acknowledgment of the Lord being the proprietor of it: and set it down before the altar of the Lord...

Keil & Delitzsch Lutheran @keilanddelitzsch

Deu 26:1-4 Of the first of the fruit of the ground, which was presented from the land received from the Lord, the Israelites was to take a portion (מראשׁית with מן partitive), and bring it in a basket to the place of the sanctuary, and give it to the priest who should be there, with the words, “I have made known to-day to the Lord...

Commenting on Deuteronomy 26:1-4