Talmidah said:
Related question...I have heard some Christians say that the last supper was actually the passover meal. Is this a common belief?
Hello Talmidah. As far as I'm aware, this is the only belief. The belief that the Last Supper was the Passover is essential to Christian doctrine on the passion of the Lord. The Bible specifically tells us that the Last Supper was the Passover:
He said to them, "Behold, when you have entered the city, a man carrying a jar of water will meet you. Follow him into the house that he enters and tell the master of the house, 'The Teacher says to you, Where is the guest room, where I may eat the Passover with my disciples?' And he will show you a large upper room furnished; prepare it there." And they went and found it just as he had told them, and they prepared the Passover. And when the hour came, he reclined at table, and the apostles with him. And he said to them, "I have earnestly desired to eat this Passover with you before I suffer. For I tell you I will not eat it until it is fulfilled in the kingdom of God." (St. Luke 22:10-16)
Besides this, the symbolism of the crucifixion and the eucharist would be destroyed if the Last Supper were not the Passover meal. Christians do not simply believe that the passion was merely meant to mimic the Passover, in fact we believe that Christ
is the Passover, as it says:
Cleanse out the old leaven that you may be a new lump, as you really are unleavened. For Christ, our Passover lamb, has been sacrificed. (1 Corinthians 5:7)
In the Law of Moses, it says that in the day that God redeemed Israel from Egypt, the children of Israel stained their doors with the blood of the Passover lamb. When the Lord killed the firstborn of Egypt, the firstborn of Israel were saved by the lamb's blood. The Bible says:
The blood shall be a sign for you, on the houses where you are. And when I see the blood, I will pass over you, and no plague will befall you to destroy you, when I strike the land of Egypt. (Exodus 12:13)
These things may be taken as an allegory. Egypt is the fallen world, Israel is the church of Christ, and the lamb's blood is the blood of Christ.
When the children of Israel were redeemed from Egypt, Moses parted the Red Sea, and by passing through the waters, they were baptized into Moses. Now we may consider the elements of the eucharist. The bread, which is the body of Christ, is the Passover lamb which is slain for the atonement for sin. The wine, which is the blood of Christ, is the the blood of the Passover lamb, by which God passes over the sins of all who believe in Christ, as it says:
For all have sinned and fall short of the glory of God, and are justified by his grace as a gift, through the redemption that is in Christ Jesus, whom God put forward as a propitiation by his blood, to be received by faith. This was to show God's righteousness, because in his divine forbearance he had passed over former sins. (Romans 3:23-25)
Because the Passover and the passion of the Lord are so intimately connected, I think that it would be impossible for the two events to be theologically separated without destroying the meaning of both.