[ealgeone]

The Mass is the Sacrifice offered to God the Father, it is one and the same Sacrifice as that offered by Our Lord on the Cross. Same spotless Victim, same eternal High Priest.

But that's the point...a sacrifice is not needed to please God any longer. The sacrifice was made on the cross for all of our sins....past, present and future.

[LurkingSince'98]

you said:
But that’s the point...a sacrifice is not needed to please God any longer. The sacrifice was made on the cross for all of our sins....past, present and future.

“any longer” describes a length of time

“past, present and future.” describes the dimensions of time

Since Christ is eternal and infinite so any of His actions are eternal and infinite - ie they are not governed or limited by time and space.

Therefore although you are finite and subject to both space and time, however Christ’s Sacrifice is not and is happening for Him in the eternal now.

For the Greater Glory of God