The saints have long held out the value of meditating upon the Passion of our Lord as a means of deepening our desire and love for God. Here is the lesson, as it were, that we can reflect upon endlessly. The Sacred Heart of Jesus is consumed with love for us and His desire for our salvation and is the crucible in which our sins are purged.
"The Passion and Death of Christ involved his whole body. They were effected through all the wounds which he received during the Passion. However they were above all accomplished in his Heart, because it agonized in the dying of his entire body. His Heart was consumed in the throbbing pain of all his wounds. In this despoliation the Heart burned with love; a living fire of love consumed the Heart of Jesus on the Cross.
This love of the Heart was the propitiating power for sins. It overcame and overcomes for all time all the evil contained in sin, all estrangement from God, all rebellion of the human free will, all improper use of created freedom which opposes God and his holiness.
Jesus is the willing victim because he offered himself "freely to his passion" (Roman Missal, Eucharistic Prayer II), the victim of expiation for the sins of mankind (cf. Lev. 1:5; Heb. 10:5-10), which he purged in the fire of his love.
Jesus is the eternal victim. Risen from the dead and glorified at the right hand of the Father, he preserves in his immortal body the marks of the wounds of his nailed hands and feet, of his pierced heart (cf. Jn. 20:27; Lk. 24:39-40) and presents them to the Father in his incessant prayer of intercession on our behalf." (Blessed John Paul II)