Pesach / Passover

So they departed from Raʽmeses in the first month, on the fifteenth day of the first month, on the morrow of the Passover the children of Yisra'ĕl went out with boldness before the eyes of all the Mitsrites,

And this day shall be unto you for a memorial; and ye shall keep it a feast to YHVH throughout your generations; ye shall keep it a feast by an ordinance forever.