Until our time, it was customary to practice the consecration to the two Hearts separately, first to the Sacred Heart of Jesus and then to the Heart of Mary. The consecration of the universal Church and the world by the Pope marks the culmination of this practice.
Thus, in 1899, Pope Leo XIII consecrated the Church and the world to the Sacred Heart of Jesus. In 1942, Pope Pius XII made a similar consecration of the Church and the world to the Immaculate Heart of Mary. Pope John Paul II repeated this same consecration in 1984 and in 2000.
Jesus and Mary are inseparable. That is why we consecrate and entrust ourselves to the two Hearts at the same time.
In the Litany of the Sacred Heart we pray: "Sacred Heart of Jesus, formed by the Holy Spirit in the womb of the Virgin Mother." Inside the Virgin, through the action of the Holy Spirit, Jesus became man, with a human heart. From the beginning, the two hearts were united in an adorable way.
Mary’s heart was the first heart to venerate Jesus’ Heart and to understand the depths of his love. Mary, mother and educator, formed the human heart of her son. As the Roman soldier's spear pierced the heart of the crucified Jesus, Mary's heart was also pierced with the sword of sorrows. The Sacred Heart of Jesus is the mirror image of his Mother's Heart.
In the Church, devotion to the Heart of Mary and to the Sacred Heart have developed simultaneously. The feast of the Immaculate Heart of Mary is celebrated on the day after the feast of the Sacred Heart, which shows the deep connection between the two devotions.
In 1916, during the three apparitions of the angel at Fatima, the Angel of Peace spoke about the Heart of Jesus and the Heart of Mary. The Mother is always with her Son! In the second apparition of Our Lady at Fatima, on June 13, 1917, Lucia received the mission to propagate the devotion to the Immaculate Heart of Mary, to obtain peace in the world. At that time, devotion to the Heart of Jesus was already widely practiced and promoted.