Moses
Exodus 12:25BSB·traditional attribution

When you enter the land that the LORD will give you as He promised, you are to keep this service.

John Calvin Reformed @genevareformer

25. When ye come into the land. He now adds that this rite must be annually observed, in order that the memory of this extraordinary grace might never perish. But since a commandment is given respecting the continual observation The word “Sabbath,” which is not translated in the French, is probably an accidental interpolation.

Matthew Henry Presbyterian @wholebiblehenry

I. Moses is here, as a faithful steward in God's house, teaching the children of Israel to observe all things which God had commanded him; and no doubt he gave the instructions as largely as he received them, though they are not so largely recorded. It is here added, 1.

Commenting on Exodus 12:21-28

John Gill Reformed Baptist @doctorgill

And it shall come to pass, when your children shall say unto you, what mean ye by this service? Of killing and roasting a lamb, and eating it with bitter herbs, and of abstaining from leavened bread. And it shall come to pass, when your children shall say unto you, what mean ye by this service?