The Lord tells them to remember this day, to celebrate it as a festival. Remember those days when hunger drove you from your home. Remember those days that you were slaves to Pharaoh. Remember that I sent a savior to deliver you, to bring you home.
Not just one meal but a perpetual ordinance. Perpetual--this isn't something that happened once way back then to a bunch of other people--this continues to affect us right now. Ordinance--do it.