Moses
Leviticus 23:6BSB·traditional attribution

On the fifteenth day of the same month begins the Feast of Unleavened Bread to the LORD. For seven days you must eat unleavened bread.

Matthew Henry Presbyterian @wholebiblehenry

Here again the feasts are called the feasts of the Lord, because he appointed them. Jeroboam's feast, which he devised of his own heart (Kg1 12:33), was an affront to God, and a reproach upon the people. These feasts were to be proclaimed in their seasons (Lev 23:4), and the seasons God chose for them were in March, May and September (according to our present...

Commenting on Leviticus 23:4-14

John Gill Reformed Baptist @doctorgill

And on the fifteenth day of the same month is the feast of unleavened bread unto the Lord,.... Which was the day the children of Israel went out of Egypt with their dough and leaven, having not time to leaven it; in remembrance of which this feast was appointed: seven days ye must eat unleavened bread; see Exo 12:15.

Jamieson-Fausset-Brown Reformed @jfbcommentary

THE PASSOVER. (Lev 23:5-8) the Lord's passover--(See Exo 12:2, Exo 12:14, Exo 12:18). The institution of the passover was intended to be a perpetual memorial of the circumstances attending the redemption of the Israelites, while it had a typical reference to a greater redemption to be effected for God's spiritual people.

Commenting on Leviticus 23:5-8