Exodus 12:18

Overview - Exodus 12
1	The beginning of the year is changed.
3	The passover is instituted.
11	The import of the rite of the passover.
15	Unleavened bread, etc.
29	The firstborn are slain.
31	The Israelites are driven out of the land.
37	They come to Succoth.
41	The time of their sojourning.
43	The ordinance of the passover.

Exodus 12:18  (King James Version)
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.