[newgeezer]

in order to perpetuate the sacrifice

Hebrews 7
²⁶For it was fitting for us to have such a high priest, holy, innocent, undefiled, separated from sinners and exalted above the heavens; ²⁷who does not need daily, like those high priests, to offer up sacrifices, first for His own sins and then for the sins of the people, because this He did once for all when He offered up Himself.

[Campion]

Yes, we agree with that verse. The sacrifice is not repeated, it is once and thus eternal (as Hebrews clearly teaches elsewhere, Christ is even now in the heavenly Holy of Holies offering his blood for us); it is not just for a single individual, but for all.

[Dominick]

He sure did sacrifice himself, and continues to do so, in order to be here in Body and Blood. In a mystical way, Christ continues to pour out his Blood for our salvation. The Sacrifice at Mass is that same Sacrifice, so Christ's promise of life in John 6:53-58 is able to be realized.

53 Jesus said to them, "Amen, amen, I say to you, unless you eat the flesh of the Son of Man and drink his blood, you do not have life within you.
54 Whoever eats my flesh and drinks my blood has eternal life, and I will raise him on the last day.
55 For my flesh is true food, and my blood is true drink.
56 Whoever eats my flesh and drinks my blood remains in me and I in him.
57 Just as the living Father sent me and I have life because of the Father, so also the one who feeds on me will have life because of me.
58 This is the bread that came down from heaven. Unlike your ancestors who ate and still died, whoever eats this bread will live forever."

Jesus is the Bread of Life.

[jo kus]

"who does not need daily, like those high priests, to offer up sacrifices, first for His own sins and then for the sins of the people, because this He did once for all when He offered up Himself"

Many people forget that a sacrifice consists of two things:

1. The destruction of the offering. Jesus was "destroyed" once.

2. The offering by the priest to God. Jesus is the High Priest. Considering that He is eternal, He is able to continue the sacrificial nature of His offering for all time. This is why Catholics say the Mass is a sacrifice. The victim has been killed, but the High Priest continues to offer it to God for all time.

This continual offering allows us, 2000 years removed, to partake of the benefits of Jesus' sacrifice.

Regards

[siunevada]

For what it's worth, here's (part of) what they think:

[Christ], our Lord and God, was once and for all to offer himself to God the Father by his death on the altar of the cross, to accomplish there an everlasting redemption. But because his priesthood was not to end with his death, at the Last Supper "on the night when he was betrayed," [he wanted] to leave to his beloved spouse the Church a visible sacrifice (as the nature of man demands) by which the bloody sacrifice which he was to accomplish once for all on the cross would be re-presented, its memory perpetuated until the end of the world, and its salutary power be applied to the forgiveness of the sins we daily commit.189

189 Council of Trent (1562): DS 1740; cf. 1 Cor 11:23; Heb 7:24, 27.

Heb7:24 but he, because he remains forever, has a priesthood that does not pass away.

Hmmmm. A priesthood that does not pass away.