Exodus 12:42

A night of watchings it is to Jehovah, to bring them out from the land of Egypt; it is this night to Jehovah of watchings to all the sons of Israel to their generations.

Deuteronomy 16:1-6

Observe the month of Abib -- and thou hast made a passover to Jehovah thy God, for in the month of Abib hath Jehovah thy God brought thee out of Egypt by night;

Exodus 12:14

And this day hath become to you a memorial, and ye have kept it a feast to Jehovah to your generations; -- a statute age-during; ye keep it a feast.

Exodus 13:10

and thou hast kept this statute at its appointed season from days to days.

Treasury of Scripture Knowledge

Summary

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.

A night to be much observed

Bible References

A night to be much observed

Exodus 12:14
And this day hath become to you a memorial, and ye have kept it a feast to Jehovah to your generations; -- a statute age-during; ye keep it a feast.
Deuteronomy 16:1
Observe the month of Abib -- and thou hast made a passover to Jehovah thy God, for in the month of Abib hath Jehovah thy God brought thee out of Egypt by night;