12-13"I will go through the land of Egypt on this night and strike down every firstborn in the land of Egypt, whether human or animal, and bring judgment on all the gods of Egypt. I am God. The blood will serve as a sign on the houses where you live. When I see the blood I will pass over you—no disaster will touch you when I strike the land of Egypt.
14-16"This will be a memorial day for you; you will celebrate it as a festival to God down through the generations, a fixed festival celebration to be observed always. You will eat unraised bread (matzoth) for seven days: On the first day get rid of all yeast from your houses—anyone who eats anything with yeast from the first day to the seventh day will be cut off from Israel. The first and the seventh days are set aside as holy; do no work on those days. Only what you have to do for meals; each person can do that.