This day will be a day of remembrance for you, which your future generations will celebrate with pilgrimage to the LORD; you will celebrate it as a statute forever. For seven days you must eat unleavened bread. From the very first day you will have your houses clear of all leaven. For whoever eats leavened bread from the first day to the seventh will be cut off from Israel. On the first day you will hold a sacred assembly, and likewise on the seventh. On these days no sort of work shall be...
Exodus 12:14–20