And whatever shall fall on any of them when they are dead, shall be unclean, whether any vessel of wood, or clothing, or skin, or sack; whatever vessel in which work is done, it must be put into water, and it shall be unclean to the evening. So it shall be cleaned.

and on the fifteenth day of the same month is the Feast of Unleavened Bread to Jehovah. You must eat unleavened bread seven days.