Moses
Exodus 12:49BSB·traditional attribution

The same law shall apply to both the native and the foreigner who resides among you.”

Matthew Henry Presbyterian @wholebiblehenry

Some further precepts are here given concerning the passover, as it should be observed in times to come. I. All the congregation of Israel must keep it, Exo 12:47. All that share in God's mercies should join in thankful praises for them. Though it was observed in families apart, yet it is looked upon as the act of the whole congregation; for the smaller communities constituted the greater.

Commenting on Exodus 12:43-51

Jamieson-Fausset-Brown Reformed @jfbcommentary

UNLEAVENED BREAD. (Exo. 12:15-51) Seven days shall ye eat unleavened bread, &c.--This was to commemorate another circumstance in the departure of the Israelites, who were urged to leave so hurriedly that their dough was unleavened (Exo 12:39), and they had to eat unleavened cakes (Deu 16:3).

Commenting on Exodus 12:15-51

Jamieson-Fausset-Brown Reformed @jfbcommentary

One law shall be to him that is homeborn, and unto the stranger--This regulation displays the liberal spirit of the Hebrew institutions. Any foreigner might obtain admission to the privileges of the nation on complying with their sacred ordinances. In the Mosaic equally as in the Christian dispensation, privilege and duty were inseparably conjoined. Next: Exodus Chapter 13