PYRO: That is a blatant lie, repeated over-and-over for hundreds of years.
"...The Catholic Church teaches that the Mass is a sacrifice; it is, in a mystical sense, a re-presentation of the identical sacrifice that Jesus made of himself on the altar of the Cross on Calvary almost 2000 years ago. So because the Catholic priest, in celebrating the Eucharist (= Mass, Liturgy) acts in the person of Christ, and in a mysterious way offers once again the unique sacrifice of Jesus on the Cross, he is called a “priest."...
Just because the RCC calls it a "mystery" doesn't make it any less blasphemous.
Read Hebrews 10.
You’re thinking as humans do, not as God does. The Sacrifice of the Cross took place in time, but it transcends the limitations of time.