I think that Proddys are supposed to remember that
in the Vatican Daffynitionary
“once”
means billions of times.
“It’s a mystery”. That should cover all the bases.
One act divided into countless acts but one act. Understand? No? It’s a Mystery.
“1367 The sacrifice of Christ and the sacrifice of the Eucharist are one single sacrifice: “The victim is one and the same: the same now offers through the ministry of priests, who then offered himself on the cross; only the manner of offering is different.” “In this divine sacrifice which is celebrated in the Mass, the same Christ who offered himself once in a bloody manner on the altar of the cross is contained and is offered in an unbloody manner.” (Catholic Catechism)
Understand yet? After Christ had made the offering in heaven, Hebrews 9, the sacrifice is still being performed but now the bloody sacrifice has become an unbloody one but “one and the same” only differing in “the manner of offering”.
The same yet different. A Mystery. Understand now?