Christ's Sacrifice: Perpetual or Completed at the Cross?

In accordance with their view of the Mass, the RC understanding of the nature of Christ's sacrifice and high priestly activity must differ from that of the Protestant. Very few RCs, however, believe that their position requires them to hold that Christ is re-sacrificed in the Mass. Rather, a more nuanced position is taken wherein Christ's high priestly sacrificial offering in heaven is perpetual or continual.

This is all unofficial, of course, because the Roman Magisterium can rarely be bothered to exercise its infallibility to clear these things up, but anyways, this article by Philip Hughes, a somewhat altered excerpt from his own commentary on Hebrews (pg. 337ff.), is a short but very well written explanation (see John Owen's exposition of Hebrews 7:25, 8:3, 9:12ff., etc. for more) as to why this notion of perpetual self-offering neither corresponds to OT typology nor can be found in Hebrews itself. It also touches on the classic Protestant position.