Exodus 13:4

1 And the Lord spoke to Moses, saying:

2 Sanctify unto me every firstborn that openeth the womb among the children of Israel, as well of men as of beasts: for they are all mine.

3 And Moses said to the people: Remember this day in which you came forth out of Egypt, and out of the house of bondage, for with a strong hand hath the Lord brought you forth out of this place: that you eat no leavened bread.

4 This day you go forth in the month of new corn.

5 And when the Lord shall have brought thee into the land of the Chanaanite, and the Hethite, and the Amorrhite, and the Hevite, and the Jebusite, which he swore to thy fathers that he would give thee, a land that floweth with milk and honey, thou shalt celebrate this manner of sacred rites in this month.

6 Seven days shalt thou eat unleavened bread: and on the seventh day shall be the solemnity of the Lord.

7 Unleavened bread shall you eat seven days: there shall not be seen any thing leavened with thee, nor in all thy coasts.