The Feasts of Passover and Unleavened Bread are bookended by specific feast days. There is a “holy convocation” on the first day of Unleavened Bread (the night of Passover, 12:8), and there is another “holy convocation” on the seventh day of Unleavened Bread (12:16). These “holy convocation” days are feast days:, the Passover feast on the first day (12:14) and another feast on the seventh day of Unleavened Bread (13:6). If part of the point of the Feast of Unleavened Bread is God’s insistence that He will give them bread, He will be their leaven, this is indicated by the feasts on either end of the week of Unleavened Bread. There is plenty to eat when they first get rid of the leaven, and there is still food at the end of the week without leaven.