The cup of the New Covenant, which Jesus anticipated when he offered himself at the Last Supper, is afterwards accepted by him from his Father's hands in his agony in the garden at Gethsemani, making himself "obedient unto death." Jesus prays: "My Father, if it be possible, let this cup pass from me…." Thus he expresses the horror that death represented for his human nature. Like ours, his human nature is destined for eternal life, but unlike ours, it is perfectly exempt from sin, the cause of death. Above all, his human nature has been assumed by the divine person of the "Author of life, the living One." By accepting in his human will that the Father's will be done, he accepts his death as redemptive, for "he himself bore our sins in his body on the tree."

Jesus knew and loved us each and all during his life, his agony, and his Passion and gave himself up for each one of us: "The Son of God…loved me and gave himself for me." He has loved us all with a human heart For this reason, the Sacred Heart of Jesus, pierced by our sins and for our salvation, "is quite rightly considered the chief sign and symbol of that…love with which the divine Redeemer continually loves the eternal Father and all human beings" without exception.

It is precisely in the Passion, when the mercy of Christ is about to vanquish it, that sin most clearly manifests its violence and its many forms: unbelief, murderous hatred, shunning and mockery by the leaders and the people, Pilate's cowardice and the cruelty of the soldiers, Judas' betrayal so bitter to Jesus, Peter's denial, and the disciples' flight. However, at the very hour of darkness, the hour of the prince of this world, the sacrifice of Christ secretly becomes the source from which the forgiveness of our sins will pour forth inexhaustibly.

The Church is born primarily of Christ's total self-giving for our salvation, anticipated in the institution of the Eucharist, and fulfilled on the cross. "The origin and growth of the Church are symbolized by the blood and water which flowed from the open side of the crucified Jesus." "For it was from the side of Christ as he slept the sleep of death upon the cross that there came forth the 'wondrous sacrament of the whole Church.' " As Eve was formed from the sleeping Adam's side, so the Church was born from the pierced heart of Christ hanging dead on the cross.