Reference

Exodus 13:1

And the Lord spake unto Moses, saying,
1

And the Lord spake unto Moses, saying,

2

Sanctify unto me all the firstborn, whatsoever openeth the womb among the children of Israel, both of man and of beast: it is mine.

3

And Moses said unto the people, Remember this day, in which ye came out from Egypt, out of the house of bondage; for by strength of hand the Lord brought you out from this place: there shall no leavened bread be eaten.