taken from this site at:
catholic.com/thisrock/2004/0404sbs.asp
CATHOLIC: The third line of evidence has to do with the Eucharist. At the Last Supper, Jesus told the apostles with him âDo this in memory of me.â When Jesus gave them this command, he was making them priests of the New Covenant.
OBJECTOR: Thatâs a strange idea. What makes you think that the phrase âDo this in memory of meâ has anything to do with being a priest? Those words are addressed to every Christian and apply to our celebrations of communion in church. I just donât see any connection between those words and the priesthood.
CATHOLIC: Youâre not alone. But consider first to whom these words were addressed. Jesus did not say they apply to every Christian. If that is true, it could be so only by an extension of the original situation. A more historically responsible interpretation sees the fact that it was just the apostles at that Last Supper.
OBJECTOR: Even if I agree with you on that score, that doesnât mean that Jesus is making the apostles priests. All these words mean is that we should remember Jesus when we have communion.
CATHOLIC: If thatâs what the words really meant, your conclusion would be true that âDo this in memory of meâ has nothing to do with being a priest. But they mean a lot more. As I noted, they were first spoken to the apostles. I donât have time to go into detail here, but let me at least say this: âDo this in memory of meâ was a command from Jesus for the apostles to do exactly what he did that night. They were to repeat this action in perpetuity. It is also clear that his actions were priestly because he was offering the bread and wine just like Melchizedek did (cf. Gen. 14:17â20). As you know, Hebrews makes it abundantly clear that Jesus is a priest in the line of Melchizedek. In a higher sense, Jesus was acting as a priest at the Last Supper by giving the apostles his body and blood. Therefore, his command to his apostles involves them performing priestly actions. They could perform such actions only if he were making them priests to stand in his place and to give the people of God his body and blood.
OBJECTOR: Well, I must say, I have never heard this interpretation before, but it seems like a stretch to me to see all that in the account of the Last Supper. It just doesnât fit with the rest of the New Testament.
CATHOLIC: Remember that we all read the Bible through the eyes of our communities of faith. I can understand why such an interpretation will seem strange to you if you have little or no experience with a priestly ministry in your church. Perhaps my last line of evidence will help you to get thinking in that direction. But first, let me sum up the first three. What we see in the Old Testament is a three-fold priesthood. There is the common or universal priesthood of all Israelites at the bottom (cf. Ex. 19:6), a ministerial priesthood above them (cf. Ex. 19:22, 24; Lev. 1:5), and a high priest at the top (cf. Num. 35: 25). We thus should expect to find a similar three-fold priesthood under the New Covenant, and we do. There is the common or universal priesthood of all Christians (cf. 1 Pet. 2:5, 9), a ministerial priesthood above them (cf. Rom. 15:16), and a high priest at the top (cf. Heb. 3:1). Rather than varying from the biblical model of priesthood, the Catholic understanding copies it exactly. It is the two-fold model that departs from what we see in the Bible.
OBJECTOR: You said you have a fourth line of evidence. What could that possibly be?
CATHOLIC: You believe, I am sure, that the whole purpose of the eternal Word (Logos) becoming flesh was to reconcile us to God. Now, in order to have a ministry of reconciliation, Christ had to be a priest as well as a prophet and king. In fact, his act of reconciling death highlighted his priestly office more than anything else. Paul tells us in 2 Corinthians 5:18â23 that the same God âwho through Christ reconciled us to himselfâ is also the one who âgave us the ministry of reconciliationâ (2 Cor. 5:18). âThe message of reconciliationâ in verse 19 is that God does not hold menâs transgressions against them. That is the ministry of the priests in the Catholic Church: They are to be agents of reconciliation by carrying Christ the Reconciler to others. That ultimately is why God chooses some men from among his people to be his priests. Priests reconcile people to God.