2 It is altogether impossible to enumerate the heavenly gifts which devotion to the Sacred Heart of Jesus has poured out on the souls of the faithful, purifying them, offering them heavenly strength, rousing them to the attainment of all virtues. Therefore, recalling those wise words of the Apostle St. James, "Every best gift and every perfect gift is from above, coming down from the Father of Lights,"(2) We are perfectly justified in seeing in this same devotion, which flourishes with increasing fervor throughout the world, a gift without price which our divine Savior the Incarnate Word, as the one Mediator of grace and truth between the heavenly Father and the human race imparted to the Church, His mystical Spouse, in recent centuries when she had to endure such trials and surmount so many difficulties.
Source: Haurietis Aquas (Vatican.va)