¹⁷ You must celebrate the Festival of Unleavened Bread because it was on this very day that I brought you out of Egypt in organized family groups. This is a permanent law for future generations: You must celebrate this day. ¹⁸ From the evening of the fourteenth day of the first month until the evening of the twenty-first day you must eat unleavened bread. ¹⁹ There should be no yeast in your houses for seven days. Whoever eats anything with yeast in it must be excluded from the community of Israel, whether he is an Israelite or not.