Exodus/ Passover Motifs in the New Testament… "The Cups"

I have been doing some thinking and study about Exodus/Passover motifs in the New Testament. One of the most obvious ones is found in the gospels when Jesus is in the upper room with his disciples. Most scholars agree that the Last Supper was shared by Jesus during a Passover meal or “Seder” (I am choosing not to go into the problem of John’s Gospel and the difficulty it presents to this theory, but am personally convinced that even the fourth evangelist’s account of Jesus can be brought into harmony on this issue).

Something that I recently learned is that Jesus did not drink the communion cup that we Christians associate with our celebration of Eucharist until after the dinner was complete. What this means is that this was the third cup of wine in the Passover meal of four cups. This cup is called the “cup of redemption.” The potential imagery of this is powerful when you consider that Jesus seemed to have not indulged in the fourth cup (reference in Mark 14.25) which appropriately is called “cup of consummation.” As Marvin Wilson states in his book, Our Father Abraham: Jewish Roots of the Christian Faith:
“The unfinished meal of Jesus was a pledge that redemption would be consummated at that future messianic banquet when he takes the cup and ‘drinks anew in the kingdom of God.’” (p 247)

What are your thoughts on the above “cup” image? What are some interesting and often overlooked connections of Exodus/Passover motifs that have inspired you?