[caww]

You stated......

“Christ’s bloody sacrifice on Calvary took place ONCE, and it will never be repeated......THE CHURCH REPEATS THAT.”

You further stated....

“The risen CHRIST BECOMES PRESENT ON THE ALTER.....AND OFFERS HIMSELF TO GOD AS A LIVING SACRIFICE.”

Clearly you are stating it is indeed a re-sacrificing of Christ.

[Cronos]

Christ’s bloody sacrifice on Calvary took place once, and it will never be repeated.Jesus’ offering was perfect, efficacious, and eternal.

The Church repeats that The Mass is a participation in this ONE heavenly offering.

The risen Christ becomes present on the altar outside time and offers himself to God as a living sacrifice.

Note -- this is the ONE heavenly offering. The mass is a participation in this ONE heavenly offering. No matter where or when, the participation is in this ONE out-of-time event.

Like the Mass, Christ words at the Last Supper are words of sacrifice, "This is my body . . . this is my blood . . . given up for you.". This is our cue for participation in what never ends outside time (since God is outside time and space): the offering of Christ to the Father for our sake (Heb 7:25, 9:24).