Wrong. The word "resacrifice" is never, ever used by actual Catholics, because that's not what we believe.
When the priest pronounces the tremendous words of consecration, he reaches up into the heavens, brings Christ down from His throne, and places Him upon our altar to be offered up again as the Victim for the sins of man. It is a power greater than that of monarchs and emperors: it is greater than that of saints and angels, greater than that of Seraphim and Cherubim. Indeed it is greater even than the power of the Virgin Mary. While the Blessed Virgin was the human agency by which Christ became incarnate a single time, the priest brings Christ down from heaven, and renders Him present on our altar as the eternal Victim for the sins of man—not once but a thousand times! The priest speaks and lo! Christ, the eternal and omnipotent God, bows His head in humble obedience to the priest’s command.
John O' Brien, Roman Catholic Priest in the Faith of Millions
Yes, it is wonderful that Christ gave us His Body and Blood for our salvation and we commemorate His sacrifice as He instructed us in the New Covenant.
The Mass is a true sacrifice, not just a commemorative meal, as “Bible Christians” insist. The Fathers knew this.
Irenaeus
“He took from among creation that which is bread, and gave thanks, saying, ‘This is my body.’ The cup likewise, which is from among the creation to which we belong, he confessed to be his blood. He taught the new sacrifice of the new covenant, of which Malachi, one of the twelve prophets, had signified beforehand: ‘You do not do my will,’ says the Lord Almighty, ‘and I will not accept a sacrifice at your hands. For from the rising of the sun to its setting my name is glorified among the Gentiles, and in every place incense is offered to my name, and a pure sacrifice; for great is my name among the gentiles,’ says the Lord Almighty. By these words he makes it plain that the former people will cease to make offerings to God; but that in every place sacrifice will be offered to him, and indeed, a pure one, for his name is glorified among the Gentiles” (Against Heresies 4:17:5 [inter A.D. 180-199]).
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In a nutshell!
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