Heb 7, 27 He did that once for all when he offered himself

(Heb 7, 27) He did that once for all when he offered himself

[27] He has no need, as did the high priests, to offer sacrifice day after day, first for his own sins and then for those of the people; he did that once for all when he offered himself.

(CCC 1544) Everything that the priesthood of the Old Covenant prefigured finds its fulfillment in Christ Jesus, the "one mediator between God and men" (2 Tim 2:5). The Christian tradition considers Melchizedek, "priest of God Most High," as a prefiguration of the priesthood of Christ, the unique "high priest after the order of Melchizedek" (Heb 5:10; cf. 6:20; Gen 14:18); "holy, blameless, unstained" (Heb 7:26), "by a single offering he has perfected for all time those who are sanctified" (Heb 10:14), that is, by the unique sacrifice of the cross. (CCC 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 teaching 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" (Rom 6:10; Heb 7:27; 9:12; cf. Jn 13:1; 17:1). 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 men - 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.