Catholic Catechism Section 1085
"In the Liturgy of the Church, it is principally his own Paschal
mystery that Christ signifies and makes present. During his
earthly life Jesus announced his Paschal mystery by
his
teachings and anticipated it by his actions. When
his Hour
comes, he lives out the unique event of history
which does not
pass away: Jesus dies, is buried, rises from the
dead, and is
seated at the right hand of the Father "once
for all." His
Paschal mystery is a real event that occurred in our
history,
but it is unique: all other historical events happen
once, and
then they pass away, swallowed up in the past. The
Paschal
mystery of Christ, by contrast, cannot remain only
in the past,
because by his death he destroyed death, and all
that Christ
is -- all that he did and suffered for all people --
participates
in the divine eternity, and so transcends all times
while being
made present in them all. The event of the Cross and
Resurrection abides and draws everything toward
life. "