Hebrews 9:25 not that
He should offer Himself often, as the high priest enters the Most Holy Place
every year with blood of another—[26] He then would have had to suffer often
since the foundation of the world; but now, once at the end of the ages, He has
appeared to put away sin by the sacrifice of Himself.
Before beginning to unfold this passage, here is what the
Roman Catholic Church says about the once for all sacrifice of Christ in what
they refer to as Mass:
The Mass is the
Sacrifice of the New Law in which Christ, through the ministry of the priest,
offers Himself to God in an unbloody manner under the appearances of bread and
wine.
The Mass is both a sacrifice and a sacred meal because it is an unbloody representation of
the sacrifice of the Cross; in application of its sacred power, the Lord
is immolated in the Sacrifice of the Mass.
Thus the Mass does not re-crucify Christ. It perpetuates His one sacrifice that stands
outside of time. God cannot be killed and when His humanity died in the
Person of Jesus Christ on Good Friday such an event must break through the
confines of time if God is truly eternal and infinite.
The Mass is classed as a sacrament (an outward sign of an
internal truth or experience) because the Eucharist is received within each
Mass. The Mass is also classed as a sacrifice, as the sacrifice of Christ on the cross is made present and true each time
the Eucharist is celebrated.
(Quotes taken from
AFC.org and EWTN.com)