Exodus 12:12-17

12On the night that you eat the Passover meal, I will travel through the country of Egypt. I will kill every firstborn son and every firstborn male animal. I will punish all the gods of Egypt. I am the Lord.

13When you put the blood round the doors of your houses, that will be a sign to show that you live there. When I see the blood on your house, I will pass over you. No trouble will hurt you, when I attack the people of Egypt.

14In future years, you must remember this day as a special day every year. It will be a festival when you worship me, the Lord. You and your descendants must do this every year, for all time.

15For seven days, you must eat flat bread that has no yeast in it. On the first day of the Passover festival, you must take all the yeast out of your houses. During those seven days, if anyone eats bread with yeast in it, he will no longer belong to my people, the Israelites.

16On the first day of the festival, you must bring together all the people to a special meeting. And you must do the same thing on the seventh day. On these special days, you must not do your usual work. You may prepare the food that you need to eat on those days. That is the only work that you may do.

17This will be the Feast of Flat Bread, when you eat bread with no yeast in it. You will remember that I brought you all out of the country of Egypt on this day. You marched out like an army, family by family! That is why you must enjoy this day as a special day, for all time. This is a rule that you must always obey.