Exodus 12:15-17

New Century Version

¹⁵ For this feast you must eat bread made without yeast for seven days. On the first day, you are to remove all the yeast from your houses. No one should eat any yeast for the full seven days of the feast, or that person will be cut off from Israel. ¹⁶ You are to have holy meetings on the first and last days of the feast. You must not do any work on these days; the only work you may do is to prepare your meals. ¹⁷ You must celebrate the Feast of Unleavened Bread, because on this very day I brought your divisions of people out of Egypt. So all of your descendants must celebrate this day. This is a law that will last from now on.