Luke 22:16 "For I say unto you, I will not any more eat thereof, until it be fulfilled in the kingdom of God."
The Passover meal was taken by the children of Israel as a remembrance of their deliverance from the slavery of Egypt.
This meal served as a signpost for the people to Christ. When the children of Israel left Egypt they were under a covenant of grace. The grace of God was there to: -
Free them from oppression,
Deliver them from slavery,
Heal them from diseases,
Sustain them on their journey
Save them from the chasing army
Guide them to the Promised Land.
Likewise the grace of God through Christ, is our deliverance, freedom, health and wholeness.
As Andrew Womaack explains the Passover was much, much more than a meal to remember:-
The Lord longed to share the passover meal with His disciples. He was less than 24 hours away from fulfilling His mission and, like anyone who can see the finish line, He must have had feelings of relief and excitement.
The passover meal commemorated the Jews' deliverance from slavery in Egypt (Ex. 13:3-10). It also had a much deeper spiritual application that, as Jesus explains here, would be fulfilled through His death. The Jewish nation as a whole had missed any future prophetic meaning of the passover.
On the night of the original passover, the Lord passed through the land of Egypt and judged the land by slaying all the firstborn men and beasts. The Jews had to slay a spotless lamb, take its blood and apply it to the door posts of their homes. They were commanded to remain indoors, under the covering of this blood until morning. When the Lord passed through the land at midnight to execute His judgment, He passed over the homes that had the lamb's blood on their doors and no one inside was hurt. This is a perfect picture of the redemption that Jesus provides for us.
Everyone deserves judgment because of their sins. However, Jesus provided Himself as a spotless, sacrificial lamb for us, so that if we apply His blood to our lives by confessing Him as Lord, God will pass over us on judgment day.
Jesus was sacrificed on the 14th day of the first month of the Jewish year - the exact day and time that the passover lambs were being slain. Truly, "Christ our passover is sacrificed for us" (1 Cor. 5:7).