Exodus 12:42

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 12:42  (King James Version)
It is a night to be much observed unto the LORD for bringing them out from the land of Egypt: this is that night of the LORD to be observed of all the children of Israel in their generations.