If time is mystical in this situation, then just as Catholics can consider that Jesus is in a perpetual state of being crucified in heaven, justifying the Eucharist and saying that participating in the Eucharist is participating in the sacrifice of Jesus, then all our sins are being continually paid for.
And if every sin that we commit is there on the cross, that means sins future as well as sins past to us because when Jesus died on the cross, ALL our sins were future to Him.
Wait - no one is suggesting that Jesus is in a perpetual state of being crucified. The mystical part happened on Good Friday.
The eucharist is entirely different from this discussion.
Correct - all of our sins (meaning us moderns and anyone A.D.) were future to Him - however the sins of those around Him and those in the past (B.C.) were also under consideration (By the Father).
Oh what a tangled web we weave.