The Crucifix represents the supernatural vision received by the Servant of God Sister Lucia of Fatima on June 13, 1929, in Tuy (Spain).

This vision concludes the cycle of Marian apparitions that began in Fatima on 13 May 13, 1917, intended for the Universal Catholic Church and, through it, for the whole world.

At the bottom is the altar on which priests celebrate the Holy Sacrifice of the Mass. It is, therefore, a revelation concerning the Eucharistic mystery.

On the right is the visionary, Sister Lucia of Fatima.

The remaining design represents, in various images, what the Holy Mass actually is, beyond the visible sacramental signs, including the renewal of the Sacrifice of our Redemption, offered to the Most Holy Trinity by Christ the Redeemer and Mary the Co-Redemptrix. By virtue of this sacrifice, the Most Holy Trinity pours out Grace and Mercy upon the whole world, through the sacramental renewal of that same sacrifice, which takes place at every Holy Mass.

Let us look in more detail at the particulars of this representation.
* At the top, there is the Father, First Person of the Holy Trinity.
* The crucified man is Jesus, Second Person of the Holy Trinity, the Son of God and Mary Ever-Virgin.
* The dove between the Father and the Son is the Holy Spirit, Third Person of the Holy Trinity.

The Eucharistic mystery is therefore contemplated at the “Heart" of the Trinitarian life. "One of the Trinity suffered in the flesh" (cf. John II, in Denz 401, year 534) and his sacrifice offered to the Most Holy Trinity is sacramentally renewed in each Holy Mass, to obtain Grace and Mercy for all humanity.

Sister Lucia confided: "I understood that I was being shown the mystery of the Most Holy Trinity and I received light on this mystery, which I am not allowed to reveal." (Memoirs, vol. I, Appendix II).

Trinitarian adoration is the goal of Eucharistic worship, in which the sacrifice of Redemption is renewed and from which sanctification (Grace) and the forgiveness of sins (Mercy) come to the whole world. This was also taught by the Angel of Portugal in the autumn of 1916, when, prostrating before the Eucharistic Sacrament, uttered the following prayer:

"Most Holy Trinity, Father, Son and Holy Spirit, I adore You profoundly, and I offer You the most precious Body, Blood, Soul and Divinity of Our Lord Jesus Christ, present in all the tabernacles of the world, in reparation for the outrages, sacrileges and indifferences with which He Himself is offended, and by the infinite merits of His most sacred Heart and the immaculate Heart of Mary, I ask You for the conversion of poor sinners."

From Christ's side gushes forth blood and water (cf. Jn 19:34), which are the symbol of Baptism and the Eucharist (cf. CCC 1125), on which all the other sacraments depend in some way. The blood of Christ falls on the host and drips into the chalice: the host and the chalice of wine consecrated in Holy Mass, re-presented in a bloodless way the sacrifice of Christ, in which he shed all his blood, for us. The wine consecrated in the Holy Mass becomes the true blood of Christ, and also in the consecrated host is the blood of Christ, together with his body, soul and divinity.

On the right side of the Crucifix we find the Virgin Mary of Fatima, with Her Immaculate Heart, held in her left hand, flaming and surrounded by thorns, symbolizing Her Sacrificial love. The thorns represent the sins of man, for which She also suffered, together with Her Divine Son. The Chalice with the Host is in the middle, between the Crucified Jesus and the Immaculate and Sorrowful Heart of Mary, indicating Her union with the Redeeming Sacrifice of Her Son. By virtue of this union, the Angel of Portugal taught that the prayer of reparation for sins must be addressed not only to Jesus, but also to the Virgin Mary. Thus recites the last part of his prayer, quoted above: "... and by the infinite merits of her most sacred Heart and the Immaculate Heart of Mary, I ask you for the conversion of poor sinners".

Pope Benedict XV, taught about the co-redemptive value of the Virgin Mary's sufferings at the foot of the Cross. And Saint John Paul II affirmed the mystical, yet real, presence of Mary in every sacramental renewal of the Sacrifice of Calvary.

The beams of light emanating from Christ Crucified, and enveloping the Eucharist and the Immaculate Heart of Mary, represent "Grace and Mercy", which are the fruit of the Sacrifice of Christ and Mary, applied to the Church and to all mankind, in each Holy Mass.