Exodus 12:42
It was a night of vigil in honor of the Lord, because He would bring them out of the land of Egypt. This same night is in honor of the Lord, a night vigil for all the Israelites throughout their generations.
Deuteronomy 16:1-6
“Observe the month of Abib
Exodus 12:14
“This day is to be a memorial for you, and you must celebrate it as a festival to the Lord. You are to celebrate it throughout your generations as a permanent statute.
Exodus 13:10
Keep this statute at its appointed time from year to year.