Gentlemen:
Please let me ask you:
As you gave no Scripture references either, I will respond off the cuff as well. If we have a misunderstanding, we may need to get into the Scriptures or into Jewish tradition. Most of my understanding of the Passover from the Jewish perspective comes from Christian Jewish sources, and most directly summarized by Zola Levitt, who operated his own ministry for Christian Jews. So I refer to tradition as well as the original Scripture, placing it in its proper context.
- When Moses commanded put the blood on the door post, was this supposed to symbolize anything in the NT?
The blood of the sacrificial lamb is placed over the house of the family (the household), indicating to the angel of death to passover. Similarly, Jesus’ blood serves that purpose for us, but in a full and complete way.
- When there were 3 unleavened loaves baked, was this symbolic or representative of anything? If so, what?
It was an indication of the Trinity. This is something that may not have been well understood by the Jews because it is not well explained until Jesus. Zola Levitt indeed says they do not know why the three, nor fully why one is hidden and brought out later. As it is said, the Bible is a book with the answers in the back.
- Why was the lamb brought in as a pet before the sacrafice? Is this symbolic?
I don’t know about this “pet” business.
- How about the various chalices of wine, did the represent anything?
I don’t recall them all well (Sanctification, Judgment, Redemption, Restoration?), but I believe there were four, and they all had specific purposes during the ritual. Scott Hahn delves deeply into these. I believe Jesus consecrated the third cup as his Blood, the Cup of Redemption. He did not finish the Passover meal, but halted before the final cup. Depending on your interpretation, he took this cup either on the cross, or is waiting to take it in Heaven. Zola Levitt speaks of the similar cup of betrothal in Jewish wedding rites, and how Jesus partook of his cup (the third) like the cup of betrothal, but waits for the last for his Bride the Church in Heaven, going to “make a place” for her (the Church) as Jewish men would build a house for their brides, at the completion of which the father of the bride certifies it as ready and allows the wedding to take place.
- How about the order to ‘clense the house of all leaven’ before the ceremony?
Leaven was symbolic of sin. Catholics require a clear conscience (freedom from mortal sin through Reconciliation and general confession of venial sin prior to Communion during the Mass) prior to receiving the Eucharist, clearing our “house” of all sin.
- How about leaven itself? Did this represent anything?
Leaven is symbolic of sin. Unleavened bread is pure, lacking the yeast “rot” that is leaven. Jesus is without sin, and thus is truly the unleavened Bread of Life. He is also striped and pierced like the bread of the Passover would be, due to its baking process.
- How about teh aficoman or torn off piece of the bread, wrapped in linen and hidden away, to come back later in the meal…did this represent anything symbolically?
The manna from heaven returning (as Jesus calls himself in John 6); Jesus’ birth (in the Place of Bread); and Jesus’ burial and resurrection (wrapped in linen, placed in a tomb, and resurrected out of it).
All very strong foreshadowings of Christ and the reality of his being the Lamb and the Bread and the Wine of the Passover, that which the Passover was instituted to forecast and prepare us for. Why all this powerful connection to Christ if he was not to actually become the Lamb, the Bread, the Wine, and to be consumed physically as such? It makes little sense to relate such things to Jesus’ truth or doctrine or word (though he is also, of course, the Word) as some form of sustenance symbolized by bread. No, he tells us that he is truly food.
And how about Melchizedek’s supper; the manna; the contents of the Ark of the Covenant; the High Priest’s sacrifice on the Day of Atonement in the Holy of Holies; the very concept of animal sacrifice and consumption, most dramatic with Abraham and Isaac; the manger; the encounter with the disciples on the road to Emmaus; the admonition of faithlessness for not understanding the loaves on the sea just before the bread of life discourse in John 6? All of these and many more testify to Christ’s physical presence in the Eucharist.