“Christ’s title “the Son of Man” meant that He was representative not of the Jews alone, nor of the Samaritans alone, but of all mankind. His relation to mankind was similar, as we have said, to that of Adam.
He was made man and qualified Himself for copartnership with human nature. He entered into the reality of common humanity. He assumed a human nature into His sacred person.” Archbishop Fulton J. Sheen
“The heart of liturgical worship is the Mass. Just as the redemptive work reached its culminating point on Calvary by His death on the Cross, so too, the liturgical action, which continues His work in the world, has its climax in the Mass, which renews and perpetuates on our alters the Sacrifice of the Cross.
Jesus has willed that the precious fruits of redemption, which He merited on Calvary for the whole human race, be applied and transmitted to each of the faithful in a particular way by their participation in the Eucharistic Sacrifice.
This fountain of grace which Jesus opened on Calvary continues to pour over our alters; all the faithful are obliged to approach it at least once a week by attending Sunday Mass, but we may approach it even daily, each time we are present at the Holy Sacrifice.
“The august Sacrifice of the Altar,” says the Encyclical Mediator Dei, “is not merely a commemoration of the Passion and death of Christ, but a true and proper sacrifice, in which, by immolating Himself in an unbloody manner, the Great High Priest renews His previous act on the Cross.”
The Victim is the same, so is the Priest; nothing but the manner of offering is different — bloody on the Cross, unbloody on the altar. If we do not see in the Mass, as Mary did on Calvary, the torn Body of Christ and the Blood flowing from His wounds, we do have, by virtue of the Consecration, the real presence of this Body and Blood.
Moreover, as this divine presence becomes actualized under two distinct species, the bloody death on Calvary is mystically renewed by the real separation of the Body and Blood of the Saviour.”
(Fr. Gabriel of St. Mary Magdalen, O.C.D. from the book “Divine Intimacy” meditations on the interior life for every day of the liturgical year.pp 478).