THE SECOND BOOK OF MOSES, CALLED EXODUS.
EXODUS CHAPTER 12:17-20
17 And ye shall observe the feast of
unleavened bread; for in this selfsame day
have I brought your armies out of the land
of Egypt: therefore shall ye observe this
day in your generations by an ordinance
for ever.
18 ¶ In the first month, on the fourteenth
day of the month at even, ye shall eat
unleavened bread, until the one and
twentieth day of the month at even.
19 Seven days shall there be no leaven
found in your houses: for whosoever
eateth that which is leavened, even that
soul shall be cut off from the congregation
of Israel, whether he be a stranger, or born
in the land.
20 Ye shall eat nothing leavened; in all
your habitations shall ye eat unleavened
bread.